Fix multi test

src/test/regress/expected/multi_function_in_join.out

@@ -36,9 +36,11 @@ DEBUG:  Plan XXX query after replacing subqueries and CTEs: SELECT table1.id, ta
 (1 row)
 
 -- Check joins of a function that returns a single integer
+SET citus.enable_metadata_sync TO OFF;
 CREATE FUNCTION add(integer, integer) RETURNS integer
 AS 'SELECT $1 + $2;'
 LANGUAGE SQL;
+RESET citus.enable_metadata_sync;
 SELECT create_distributed_function('add(integer,integer)');
  create_distributed_function
 ---------------------------------------------------------------------

src/test/regress/expected/multi_function_in_join_0.out

@@ -36,9 +36,11 @@ DEBUG:  Plan XXX query after replacing subqueries and CTEs: SELECT table1.id, ta
 (1 row)
 
 -- Check joins of a function that returns a single integer
+SET citus.enable_metadata_sync TO OFF;
 CREATE FUNCTION add(integer, integer) RETURNS integer
 AS 'SELECT $1 + $2;'
 LANGUAGE SQL;
+RESET citus.enable_metadata_sync;
 SELECT create_distributed_function('add(integer,integer)');
 DEBUG:  switching to sequential query execution mode
 DETAIL:  A distributed function is created. To make sure subsequent commands see the type correctly we need to make sure to use only one connection for all future commands

src/test/regress/sql/multi_function_in_join.sql

@@ -30,9 +30,11 @@ CREATE SEQUENCE numbers;
 SELECT * FROM table1 JOIN nextval('numbers') n ON (id = n) ORDER BY id ASC;
 
 -- Check joins of a function that returns a single integer
+SET citus.enable_metadata_sync TO OFF;
 CREATE FUNCTION add(integer, integer) RETURNS integer
 AS 'SELECT $1 + $2;'
 LANGUAGE SQL;
+RESET citus.enable_metadata_sync;
 SELECT create_distributed_function('add(integer,integer)');
 SELECT * FROM table1 JOIN add(3,5) sum ON (id = sum) ORDER BY id ASC;