Fixes #561 to qp_misc_jiras test

src/test/regress/expected/qp_misc_jiras.out

@@ -2403,6 +2403,7 @@ set statement_timeout = 1000; -- 1 sec
 execute prestmt; -- should get cancelled automatically
 ERROR:  canceling statement due to statement timeout
 drop table statement_timeout_test;
+reset statement_timeout;
 set gp_autostats_mode=none;
 drop table qp_misc_jiras.tbl_6934;
 ERROR:  table "tbl_6934" does not exist
@@ -2410,7 +2411,6 @@ create table qp_misc_jiras.tbl_6934(x inet);
 NOTICE:  Table doesn't have 'DISTRIBUTED BY' clause -- Using column named 'x' as the Greenplum Database data distribution key for this table.
 HINT:  The 'DISTRIBUTED BY' clause determines the distribution of data. Make sure column(s) chosen are the optimal data distribution key to minimize skew.
 insert into qp_misc_jiras.tbl_6934 select (i%200 || '.' || i%11 || '.' || i%11 || '.' || i%100)::inet from generate_series(1,4000000) i;
-ERROR:  canceling statement due to statement timeout
 analyze qp_misc_jiras.tbl_6934; 
 drop table qp_misc_jiras.tbl_6934;
 drop table if exists qp_misc_jiras.tbl7286_test;

src/test/regress/sql/qp_misc_jiras.sql

@@ -1477,6 +1477,7 @@ prepare prestmt as select * from statement_timeout_test s1, statement_timeout_te
 set statement_timeout = 1000; -- 1 sec
 execute prestmt; -- should get cancelled automatically
 drop table statement_timeout_test;
+reset statement_timeout;
 set gp_autostats_mode=none;
 drop table qp_misc_jiras.tbl_6934;
 create table qp_misc_jiras.tbl_6934(x inet);