Add domain_id to groups
Add domain_id to groups

When groups are hosted in ldap you must query the domain explictly to
list the groups

Change-Id: I5be672c3eae5e013525cc7c0a4d73f9166f379ba

openstack/python-openstacksdk,dtroyer/python-openstacksdk,stackforge/python-openstacksdk,openstack/python-openstacksdk,dtroyer/python-openstacksdk,openstack-infra/shade,openstack-infra/shade,stackforge/python-openstacksdk