Adding delay in OLT deletion

Change-Id: I461597855424c17d4635f10da82abe68a4d9009f
diff --git a/xos/synchronizer/model_policies/test_model_policy_voltserviceinstance.py b/xos/synchronizer/model_policies/test_model_policy_voltserviceinstance.py
index bfddb64..e6fb171 100644
--- a/xos/synchronizer/model_policies/test_model_policy_voltserviceinstance.py
+++ b/xos/synchronizer/model_policies/test_model_policy_voltserviceinstance.py
@@ -46,7 +46,7 @@
         sys.path.append(xos_dir)
         sys.path.append(os.path.join(xos_dir, 'synchronizers', 'new_base'))
 
-        config = os.path.join(test_path, "test_config.yaml")
+        config = os.path.join(test_path, "../test_config.yaml")
         from xosconfig import Config
         Config.clear()
         Config.init(config, 'synchronizer-config-schema.yaml')