tests: fixed some warnings on tests

rhodecode/tests/vcs_operations/conftest.py

@@ -280,10 +280,13 b' def branch_permission_setter(request):'
 
     rule_id = None
     write_perm_id = None
+    write_perm = None
+    rule = None
 
     def _branch_permissions_setter(
             repo_name, username, pattern='*', permission='branch.push_force'):
         global rule_id, write_perm_id
+        global rule, write_perm
 
         repo = Repository.get_by_repo_name(repo_name)
         repo_id = repo.repo_id
@@ -293,8 +296,6 b' def branch_permission_setter(request):'
 
         rule_perm_obj = Permission.get_by_key(permission)
 
-        write_perm = None
-
         # add new entry, based on existing perm entry
         perm = UserRepoToPerm.query() \
             .filter(UserRepoToPerm.repository_id == repo_id) \
@@ -323,8 +324,6 b' def branch_permission_setter(request):'
         Session().add(rule)
         Session().commit()
 
-        global rule, write_perm
-
         return rule
 
     @request.addfinalizer