Add missing user_id in revoke_certs_by_user_and_project()

The correct function signature is
revoke_certs_by_user_and_project(user_id, project_id)

Partially fix bug 1037183

Change-Id: Ia0cf350da9b6d8cab5e43c9897a1614b1b9918e1

nova/cert/manager.py

@@ -51,7 +51,7 @@ def revoke_certs_by_project(self, context, project_id):
 
     def revoke_certs_by_user_and_project(self, context, user_id, project_id):
         """Revoke certs for user in project."""
-        return crypto.revoke_certs_by_user_and_project(project_id)
+        return crypto.revoke_certs_by_user_and_project(user_id, project_id)
 
     def generate_x509_cert(self, context, user_id, project_id):
         """Generate and sign a cert for user in project"""