[OC4.0] add opencontrail admin

In order to stop using shared credentials a
separate contrail admin user has to be created.
For contrail services this user will be used.
PROD-23356
Generation of unused files (keystonerc, openstackrc
and ctrl-details) has been removed from common.sls.

Change-Id: I6efe241d27a68b5f277bd43909e11c28ad027ace
diff --git a/metadata/service/client/cluster.yml b/metadata/service/client/cluster.yml
index 3cfd124..337e9d0 100644
--- a/metadata/service/client/cluster.yml
+++ b/metadata/service/client/cluster.yml
@@ -6,6 +6,8 @@
     opencontrail_identity_port: 35357
     opencontrail_identity_version: '2.0'
     openstack_control_address: 127.0.0.1
+    opencontrail_admin_password: 'none'
+    opencontrail_admin_user: 'contrail'
   opencontrail:
     client:
       enabled: True
@@ -16,8 +18,8 @@
         port: ${_param:opencontrail_identity_port}
         version: ${_param:opencontrail_identity_version}
         tenant: admin
-        user: admin
-        password: ${_param:keystone_admin_password}
+        user: ${_param:opencontrail_admin_user}
+        password: ${_param:opencontrail_admin_password}
       api:
         engine: contrail
         host: ${_param:opencontrail_control_address}