Increase stability of the look_a_like test: clear learning data before

the test.

Author: danolivo

expected/look_a_like.out

@@ -1,4 +1,10 @@
 CREATE EXTENSION aqo;
+SELECT true FROM aqo_reset();
+ bool 
+------
+ t
+(1 row)
+
 SET aqo.join_threshold = 0;
 SET aqo.mode = 'learn';
 SET aqo.show_details = 'on';

regress_schedule

@@ -15,11 +15,8 @@ test: plancache
 test: update_functions
 # Performance-dependent test. Can be ignored if executes in containers or on slow machines
 ignore: statement_timeout
-ignore: smart_statement_timeout
-test: statement_timeout
 test: temp_tables
 test: top_queries
 test: relocatable
 test: look_a_like
 test: feature_subspace
-test: smart_statement_timeout

sql/look_a_like.sql

@@ -1,4 +1,5 @@
 CREATE EXTENSION aqo;
+SELECT true FROM aqo_reset();
 SET aqo.join_threshold = 0;
 SET aqo.mode = 'learn';
 SET aqo.show_details = 'on';