Fix LP #1819284 and barbican.get_secret of barbican service

Because secret class is lazy in barbican client, secret would
really access the api to get secret properties while calling
some property.

Closes-bug: #1819284

Change-Id: I0e37ccbb0bc74621f9dd47adbff98d64f2f79653

CHANGELOG.rst

@@ -26,6 +26,13 @@ Changed
   Cinder service. To use another service type, use ``api_versions@openstack``
   context or ``api_info`` property of environment configuration.
 
+Fixed
+~~~~~~~
+
+* Close bug LP #1819284. Because secret class is lazy in barbican client,
+  secret would really access the api to get secret properties while calling
+  some property.
+
 [1.4.0] - 2019-03-07
 --------------------
 

rally_openstack/cleanup/resources.py

@@ -1112,7 +1112,7 @@ class BarbicanSecrets(base.ResourceManager):
 
     def is_deleted(self):
         try:
-            self._manager().get(self.id())
+            self._manager().get(self.id()).status
         except Exception:
             return True
 

rally_openstack/services/key_manager/barbican.py

@@ -58,7 +58,15 @@ class BarbicanService(service.Service):
 
         :param secret_name: The name of the secret.
         """
-        return self._clients.barbican().secrets.get(secret_ref)
+        secret = self._clients.barbican().secrets.get(secret_ref)
+        # secret is lazy, its properties would be filled with real
+        # values while getting some property.
+        try:
+            secret.status
+        except Exception as e:
+            from rally import exceptions
+            raise exceptions.GetResourceFailure(resource=secret, err=e)
+        return secret
 
     @atomic.action_timer("barbican.delete_secret")
     def delete_secret(self, secret_name):