Remove redundant tests on AO/AOCO tables.

We have tons of tests on creating AO and AOCO tables in the regular
regression suite, with and without checksum. And a lot of tests on inserts
to AO/AOCO tests. There are also tests on having indexes on tables,
including AO/AOCO tests. I don't see anything interesting in these
particular combinations.

src/test/tinc/tincrepo/mpp/gpdb/tests/storage/access_methods/appendonly_checksum/expected/ao_with_checksum.ans

--- 
--- @created 2014-05-19 12:00:00
--- @modified 2014-05-19 12:00:00
--- @tags storage
--- @description AO table with checksum ON and with btree index
-DROP TABLE IF EXISTS ao_checksum_on;
-DROP TABLE
-CREATE TABLE ao_checksum_on (
-    c_custkey integer,
-    c_name character varying(25),
-    c_comment text, 
-    c_rating float,
-    c_phone character(15),
-    c_acctbal numeric(15,2),
-    c_date date,
-    c_timestamp timestamp 
-)
-WITH (checksum=true, appendonly=true, compresstype=quicklz, compresslevel=1) DISTRIBUTED BY (c_custkey);
-CREATE TABLE
-CREATE INDEX ao_checksum_on_btree_idx ON ao_checksum_on USING btree (c_custkey);
-CREATE INDEX
-insert into ao_checksum_on values( 1, 'aa','this is a looong text' , 3.5, '12121212',1000.34,'2015/10/10',now()); 
-INSERT 0 1
-insert into ao_checksum_on values( 2, 'ab','this is also a looong text' , 4.5, '3456789',3000.45,'2014/08/10',now()); 
-INSERT 0 1
-insert into ao_checksum_on values( 3, 'ac','this  too is a looong text' , 1.5, '878787',500.54,'2014/04/04',now()); 
-INSERT 0 1
-select count(*) as one from pg_appendonly where checksum=True and relid = (select oid from pg_class where relname = 'ao_checksum_on');
- one 
------
-   1
-(1 row)
-

src/test/tinc/tincrepo/mpp/gpdb/tests/storage/access_methods/appendonly_checksum/expected/ao_with_checksum_off.ans

--- 
--- @created 2014-05-19 12:00:00
--- @modified 2014-05-19 12:00:00
--- @tags storage
--- @description AO table with checksum OFF and with btree index
-SET gp_default_storage_options = 'checksum=false';
-SET
-DROP TABLE IF EXISTS ao_checksum_off;
-psql:/path/sql_file:1: NOTICE:  table "ao_checksum_off" does not exist, skipping
-DROP TABLE
-CREATE TABLE ao_checksum_off (
-    c_custkey integer,
-    c_name character varying(25),
-    c_comment text, 
-    c_rating float,
-    c_phone character(15),
-    c_acctbal numeric(15,2),
-    c_date date,
-    c_timestamp timestamp 
-)
-WITH ( appendonly=true, compresstype=quicklz, compresslevel=1) DISTRIBUTED BY (c_custkey);
-CREATE TABLE
-CREATE INDEX ao_checksum_off_btree_idx ON ao_checksum_off USING btree (c_custkey);
-CREATE INDEX
-insert into ao_checksum_off values( 1, 'aa','this is a looong text' , 3.5, '12121212',1000.34,'2015/10/10',now()); 
-INSERT 0 1
-insert into ao_checksum_off values( 2, 'ab','this is also a looong text' , 4.5, '3456789',3000.45,'2014/08/10',now()); 
-INSERT 0 1
-insert into ao_checksum_off values( 3, 'ac','this  too is a looong text' , 1.5, '878787',500.54,'2014/04/04',now()); 
-INSERT 0 1
-select count(*) as one from pg_appendonly where checksum=True and relid = (select oid from pg_class where relname = 'ao_checksum_off');
- one 
------
-   0
-(1 row)
-

src/test/tinc/tincrepo/mpp/gpdb/tests/storage/access_methods/appendonly_checksum/expected/co_with_checksum.ans

--- 
--- @created 2014-10-9 12:00:00
--- @modified 2014-10-9 12:00:00
--- @tags storage
--- @description AOCO multiple insert to create multiple var-block for table with btree index
-DROP TABLE IF EXISTS co_checksum_on;
-DROP TABLE
-CREATE TABLE co_checksum_on (
-    c_custkey integer,
-    c_name character varying(25),
-    c_comment text, 
-    c_rating float,
-    c_phone character(15),
-    c_acctbal numeric(15,2),
-    c_date date,
-    c_timestamp timestamp 
-)
-WITH (checksum=true, appendonly=true, orientation=column, compresstype=quicklz, compresslevel=1) DISTRIBUTED BY (c_custkey);
-CREATE TABLE
-CREATE INDEX co_checksum_on_btree_idx ON co_checksum_on USING btree (c_custkey);
-CREATE INDEX
-insert into co_checksum_on values( 1, 'aa','this is a looong text' , 3.5, '12121212',1000.34,'2015/10/10',now()); 
-INSERT 0 1
-insert into co_checksum_on values( 2, 'ab','this is also a looong text' , 4.5, '3456789',3000.45,'2014/08/10',now()); 
-INSERT 0 1
-insert into co_checksum_on values( 3, 'ac','this  too is a looong text' , 1.5, '878787',500.54,'2014/04/04',now()); 
-INSERT 0 1
-select count(*) from pg_appendonly where checksum=True and relid = (select oid from pg_class where relname = 'co_checksum_on');
- count 
--------
-     1
-(1 row)
-

src/test/tinc/tincrepo/mpp/gpdb/tests/storage/access_methods/appendonly_checksum/expected/co_with_checksum_off.ans

--- 
--- @created 2014-10-9 12:00:00
--- @modified 2014-10-9 12:00:00
--- @tags storage
--- @description AOCO multiple insert to create multiple var-block for table with btree index
-DROP TABLE IF EXISTS co_checksum_on;
-DROP TABLE
-CREATE TABLE co_checksum_on (
-    c_custkey integer,
-    c_name character varying(25),
-    c_comment text, 
-    c_rating float,
-    c_phone character(15),
-    c_acctbal numeric(15,2),
-    c_date date,
-    c_timestamp timestamp 
-)
-WITH (checksum=true, appendonly=true, orientation=column, compresstype=quicklz, compresslevel=1) DISTRIBUTED BY (c_custkey);
-CREATE TABLE
-CREATE INDEX co_checksum_on_btree_idx ON co_checksum_on USING btree (c_custkey);
-CREATE INDEX
-insert into co_checksum_on values( 1, 'aa','this is a looong text' , 3.5, '12121212',1000.34,'2015/10/10',now()); 
-INSERT 0 1
-insert into co_checksum_on values( 2, 'ab','this is also a looong text' , 4.5, '3456789',3000.45,'2014/08/10',now()); 
-INSERT 0 1
-insert into co_checksum_on values( 3, 'ac','this  too is a looong text' , 1.5, '878787',500.54,'2014/04/04',now()); 
-INSERT 0 1
-select count(*) from pg_appendonly where checksum=True and relid = (select oid from pg_class where relname = 'co_checksum_on');
- count 
--------
-     1
-(1 row)
-

src/test/tinc/tincrepo/mpp/gpdb/tests/storage/access_methods/appendonly_checksum/sql/ao_with_checksum.sql

--- 
--- @created 2014-05-19 12:00:00
--- @modified 2014-05-19 12:00:00
--- @tags storage
--- @description AO table with checksum ON and with btree index
-
-
-DROP TABLE IF EXISTS ao_checksum_on;
-CREATE TABLE ao_checksum_on (
-    c_custkey integer,
-    c_name character varying(25),
-    c_comment text, 
-    c_rating float,
-    c_phone character(15),
-    c_acctbal numeric(15,2),
-    c_date date,
-    c_timestamp timestamp 
-)
-WITH (checksum=true, appendonly=true, compresstype=quicklz, compresslevel=1) DISTRIBUTED BY (c_custkey);
-CREATE INDEX ao_checksum_on_btree_idx ON ao_checksum_on USING btree (c_custkey);
-insert into ao_checksum_on values( 1, 'aa','this is a looong text' , 3.5, '12121212',1000.34,'2015/10/10',now()); 
-insert into ao_checksum_on values( 2, 'ab','this is also a looong text' , 4.5, '3456789',3000.45,'2014/08/10',now()); 
-insert into ao_checksum_on values( 3, 'ac','this  too is a looong text' , 1.5, '878787',500.54,'2014/04/04',now()); 
-select count(*) as one from pg_appendonly where checksum=True and relid = (select oid from pg_class where relname = 'ao_checksum_on');
-

src/test/tinc/tincrepo/mpp/gpdb/tests/storage/access_methods/appendonly_checksum/sql/ao_with_checksum_off.sql

--- 
--- @created 2014-05-19 12:00:00
--- @modified 2014-05-19 12:00:00
--- @tags storage
--- @description AO table with checksum OFF and with btree index
-
-SET gp_default_storage_options = 'checksum=false';
-DROP TABLE IF EXISTS ao_checksum_off;
-CREATE TABLE ao_checksum_off (
-    c_custkey integer,
-    c_name character varying(25),
-    c_comment text, 
-    c_rating float,
-    c_phone character(15),
-    c_acctbal numeric(15,2),
-    c_date date,
-    c_timestamp timestamp 
-)
-WITH ( appendonly=true, compresstype=quicklz, compresslevel=1) DISTRIBUTED BY (c_custkey);
-CREATE INDEX ao_checksum_off_btree_idx ON ao_checksum_off USING btree (c_custkey);
-insert into ao_checksum_off values( 1, 'aa','this is a looong text' , 3.5, '12121212',1000.34,'2015/10/10',now()); 
-insert into ao_checksum_off values( 2, 'ab','this is also a looong text' , 4.5, '3456789',3000.45,'2014/08/10',now()); 
-insert into ao_checksum_off values( 3, 'ac','this  too is a looong text' , 1.5, '878787',500.54,'2014/04/04',now()); 
-select count(*) as one from pg_appendonly where checksum=True and relid = (select oid from pg_class where relname = 'ao_checksum_off');
-
-

src/test/tinc/tincrepo/mpp/gpdb/tests/storage/access_methods/appendonly_checksum/sql/co_with_checksum.sql

--- 
--- @created 2014-10-9 12:00:00
--- @modified 2014-10-9 12:00:00
--- @tags storage
--- @description AOCO multiple insert to create multiple var-block for table with btree index
-
-
-DROP TABLE IF EXISTS co_checksum_on;
-CREATE TABLE co_checksum_on (
-    c_custkey integer,
-    c_name character varying(25),
-    c_comment text, 
-    c_rating float,
-    c_phone character(15),
-    c_acctbal numeric(15,2),
-    c_date date,
-    c_timestamp timestamp 
-)
-WITH (checksum=true, appendonly=true, orientation=column, compresstype=quicklz, compresslevel=1) DISTRIBUTED BY (c_custkey);
-CREATE INDEX co_checksum_on_btree_idx ON co_checksum_on USING btree (c_custkey);
-insert into co_checksum_on values( 1, 'aa','this is a looong text' , 3.5, '12121212',1000.34,'2015/10/10',now()); 
-insert into co_checksum_on values( 2, 'ab','this is also a looong text' , 4.5, '3456789',3000.45,'2014/08/10',now()); 
-insert into co_checksum_on values( 3, 'ac','this  too is a looong text' , 1.5, '878787',500.54,'2014/04/04',now()); 
-select count(*) from pg_appendonly where checksum=True and relid = (select oid from pg_class where relname = 'co_checksum_on');
-

src/test/tinc/tincrepo/mpp/gpdb/tests/storage/access_methods/appendonly_checksum/sql/co_with_checksum_off.sql

--- 
--- @created 2014-10-9 12:00:00
--- @modified 2014-10-9 12:00:00
--- @tags storage
--- @description AOCO multiple insert to create multiple var-block for table with btree index
-
-
-DROP TABLE IF EXISTS co_checksum_on;
-CREATE TABLE co_checksum_on (
-    c_custkey integer,
-    c_name character varying(25),
-    c_comment text, 
-    c_rating float,
-    c_phone character(15),
-    c_acctbal numeric(15,2),
-    c_date date,
-    c_timestamp timestamp 
-)
-WITH (checksum=true, appendonly=true, orientation=column, compresstype=quicklz, compresslevel=1) DISTRIBUTED BY (c_custkey);
-CREATE INDEX co_checksum_on_btree_idx ON co_checksum_on USING btree (c_custkey);
-insert into co_checksum_on values( 1, 'aa','this is a looong text' , 3.5, '12121212',1000.34,'2015/10/10',now()); 
-insert into co_checksum_on values( 2, 'ab','this is also a looong text' , 4.5, '3456789',3000.45,'2014/08/10',now()); 
-insert into co_checksum_on values( 3, 'ac','this  too is a looong text' , 1.5, '878787',500.54,'2014/04/04',now()); 
-select count(*) from pg_appendonly where checksum=True and relid = (select oid from pg_class where relname = 'co_checksum_on');
-

src/test/tinc/tincrepo/mpp/gpdb/tests/storage/access_methods/appendonly_checksum/test_appendonly_checksum_sql.py

-"""
-Copyright (C) 2004-2015 Pivotal Software, Inc. All rights reserved.
-
-This program and the accompanying materials are made available under
-the terms of the under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-"""
-
-from mpp.models import SQLTestCase
-'''
-Sql test for appendonly checksum feature
-'''
-
-class AOCOAlterColumnTestCase(SQLTestCase):
-    ''' 
-    @gucs gp_create_table_random_default_distribution=off
-    @optimizer_mode off
-    @tags ORCA
-    @product_version gpdb: [4.3.4.0-]
-    '''
-
-    sql_dir = 'sql/'
-    ans_dir = 'expected/'
-    out_dir = 'output/'