Generate random keystone users

Change-Id: I8dbd07b10d29b43d1c35fa76bcaa0f0efb32beda
Related-Prod: PROD-29868
diff --git a/keystone/client/v3/service/gnocchi.yml b/keystone/client/v3/service/gnocchi.yml
index 63241db..da3dfa7 100644
--- a/keystone/client/v3/service/gnocchi.yml
+++ b/keystone/client/v3/service/gnocchi.yml
@@ -8,6 +8,7 @@
         v3:
           users:
             gnocchi:
+              name: ${_param:keystone_gnocchi_username}
               password: ${_param:keystone_gnocchi_password}
               email: ${_param:admin_email}
               options: ${_param:openstack_service_user_options}