Add server_group in default_quota_set

Items about server_group is missing in default_quota_set, this is
to add them.

see http://developer.openstack.org/api-ref/compute/?expanded=list-servers-detail,list-images-with-details-detail,show-a-quota-detail#show-a-quota

Change-Id: I974bcc3ba324b8806567f458e5708273ba34b150
1 file changed