TrivialFix: Fix a wrong order bug in resource_cleanup()

Super class resource_cleanup method should be called
after class resource cleanup method(s).

Change-Id: Ic56c49c6ca0066a97dcffc6b068dba7320728984
diff --git a/manila_tempest_tests/tests/api/base.py b/manila_tempest_tests/tests/api/base.py
index 79c8673..73fcf09 100644
--- a/manila_tempest_tests/tests/api/base.py
+++ b/manila_tempest_tests/tests/api/base.py
@@ -261,9 +261,9 @@
 
     @classmethod
     def resource_cleanup(cls):
-        super(BaseSharesTest, cls).resource_cleanup()
         cls.clear_resources(cls.class_resources)
         cls.clear_isolated_creds(cls.class_isolated_creds)
+        super(BaseSharesTest, cls).resource_cleanup()
 
     @classmethod
     @network_synchronized