Set different deadlock_timeout on each session in new isolation tests

This provides deterministic deadlock-detection ordering for new
isolation tests, fixing the sporadic failures in them.

Author: Noah Misch

src/test/isolation/expected/fk-deadlock.out

@@ -32,8 +32,8 @@ step s1i:  INSERT INTO child VALUES (1, 1);
 step s2i:  INSERT INTO child VALUES (2, 1); 
 step s2u:  UPDATE parent SET aux = 'baz';  <waiting ...>
 step s1u:  UPDATE parent SET aux = 'bar'; 
-step s2u: <... completed>
 ERROR:  deadlock detected
+step s2u: <... completed>
 step s2c:  COMMIT; 
 step s1c:  COMMIT; 
 
@@ -52,8 +52,8 @@ step s2i:  INSERT INTO child VALUES (2, 1);
 step s1i:  INSERT INTO child VALUES (1, 1); 
 step s2u:  UPDATE parent SET aux = 'baz';  <waiting ...>
 step s1u:  UPDATE parent SET aux = 'bar'; 
-step s2u: <... completed>
 ERROR:  deadlock detected
+step s2u: <... completed>
 step s2c:  COMMIT; 
 step s1c:  COMMIT; 
 

src/test/isolation/expected/fk-deadlock2.out

@@ -42,8 +42,8 @@ step s1u1:  UPDATE A SET Col1 = 1 WHERE AID = 1;
 step s2u1:  UPDATE B SET Col2 = 1 WHERE BID = 2; 
 step s2u2:  UPDATE B SET Col2 = 1 WHERE BID = 2;  <waiting ...>
 step s1u2:  UPDATE B SET Col2 = 1 WHERE BID = 2; 
-step s2u2: <... completed>
 ERROR:  deadlock detected
+step s2u2: <... completed>
 step s1c:  COMMIT; 
 step s2c:  COMMIT; 
 
@@ -52,8 +52,8 @@ step s1u1:  UPDATE A SET Col1 = 1 WHERE AID = 1;
 step s2u1:  UPDATE B SET Col2 = 1 WHERE BID = 2; 
 step s2u2:  UPDATE B SET Col2 = 1 WHERE BID = 2;  <waiting ...>
 step s1u2:  UPDATE B SET Col2 = 1 WHERE BID = 2; 
-step s2u2: <... completed>
 ERROR:  deadlock detected
+step s2u2: <... completed>
 step s2c:  COMMIT; 
 step s1c:  COMMIT; 
 
@@ -82,8 +82,8 @@ step s2u1:  UPDATE B SET Col2 = 1 WHERE BID = 2;
 step s1u1:  UPDATE A SET Col1 = 1 WHERE AID = 1; 
 step s2u2:  UPDATE B SET Col2 = 1 WHERE BID = 2;  <waiting ...>
 step s1u2:  UPDATE B SET Col2 = 1 WHERE BID = 2; 
-step s2u2: <... completed>
 ERROR:  deadlock detected
+step s2u2: <... completed>
 step s1c:  COMMIT; 
 step s2c:  COMMIT; 
 
@@ -92,8 +92,8 @@ step s2u1:  UPDATE B SET Col2 = 1 WHERE BID = 2;
 step s1u1:  UPDATE A SET Col1 = 1 WHERE AID = 1; 
 step s2u2:  UPDATE B SET Col2 = 1 WHERE BID = 2;  <waiting ...>
 step s1u2:  UPDATE B SET Col2 = 1 WHERE BID = 2; 
-step s2u2: <... completed>
 ERROR:  deadlock detected
+step s2u2: <... completed>
 step s2c:  COMMIT; 
 step s1c:  COMMIT; 
 

src/test/isolation/specs/fk-deadlock.spec

@@ -19,13 +19,13 @@ teardown
 }
 
 session "s1"
-setup		{ BEGIN; }
+setup		{ BEGIN; SET deadlock_timeout = '20ms'; }
 step "s1i"	{ INSERT INTO child VALUES (1, 1); }
 step "s1u"	{ UPDATE parent SET aux = 'bar'; }
 step "s1c"	{ COMMIT; }
 
 session "s2"
-setup		{ BEGIN; }
+setup		{ BEGIN; SET deadlock_timeout = '10s'; }
 step "s2i"	{ INSERT INTO child VALUES (2, 1); }
 step "s2u"	{ UPDATE parent SET aux = 'baz'; }
 step "s2c"	{ COMMIT; }

src/test/isolation/specs/fk-deadlock2.spec

@@ -24,13 +24,13 @@ teardown
 }
 
 session "s1"
-setup		{ BEGIN; }
+setup		{ BEGIN; SET deadlock_timeout = '20ms'; }
 step "s1u1"	{ UPDATE A SET Col1 = 1 WHERE AID = 1; }
 step "s1u2"	{ UPDATE B SET Col2 = 1 WHERE BID = 2; }
 step "s1c"	{ COMMIT; }
 
 session "s2"
-setup		{ BEGIN; }
+setup		{ BEGIN; SET deadlock_timeout = '10s'; }
 step "s2u1"	{ UPDATE B SET Col2 = 1 WHERE BID = 2; }
 step "s2u2"	{ UPDATE B SET Col2 = 1 WHERE BID = 2; }
 step "s2c"	{ COMMIT; }