Change permissions of keystonerc_admin to 0600

Also no longer creating openrc, we don't need it if we have
keystonerc_admin
https://bugzilla.redhat.com/show_bug.cgi?id=890354

Change-Id: Ifb0aa1a4d63cf077bb0a4bed076cfc068b1e2dfe

packstack/puppet/templates/keystone.pp

@@ -9,12 +9,6 @@ class {"keystone::roles::admin":
     admin_tenant => "admin"
 }
 
-class {"openstack::auth_file":
-    admin_password => "%(CONFIG_KEYSTONE_ADMINPASSWD)s",
-    admin_tenant => "admin",
-    keystone_admin_token => "%(CONFIG_KEYSTONE_ADMINTOKEN)s"
-}
-
 class {"keystone::endpoint":
     public_address  => "%(CONFIG_KEYSTONE_HOST)s",
     admin_address  => "%(CONFIG_KEYSTONE_HOST)s",