fix default params

Author: funbringer

testgres/testgres.py

@@ -499,7 +499,7 @@ def init(self, allow_=False, fsync=False, initdb_params=[]):
 
 return self
 
-def default_conf(self, allow_=True, fsync=False, log_statement='all'):
+def default_conf(self, allow_=False, fsync=False, log_statement='all'):
 """
 Apply default settings to this node.