Add basic Barbican support

Change-Id: I40b21454ec9e9895c4833e9e3b46e81adbb8be98
diff --git a/keystone/client/service/barbican.yml b/keystone/client/service/barbican.yml
index f83e6ab..70b6054 100644
--- a/keystone/client/service/barbican.yml
+++ b/keystone/client/service/barbican.yml
@@ -5,13 +5,17 @@
     client:
       server:
         identity:
+          roles:
+          - creator
           project:
             service:
               user:
                 barbican:
-                  is_admin: true
                   password: ${_param:keystone_barbican_password}
                   email: ${_param:admin_email}
+                  roles:
+                  - admin
+                  - creator
           service:
             barbican:
               type: key-manager