Add scope_types to group policies
Add scope_types to group policies

By default, groups have always required system or cloud
administrators authorization. This commit adds 'system' to all group
policies with a FIXME in the event we want to open those APIs up to
project or domain administrators.

Change-Id: Icf6575e4e67f0bd72b87faf06acde1a00b3bc244

mahak/keystone,mahak/keystone,openstack/keystone,openstack/keystone,openstack/keystone,mahak/keystone