Fix GroupAffinityFilter and GroupAntiAffinityFilter doc

The hint key is 'group' and not 'group_hosts', and the hint value is an
arbitrary value and not an instance UUID.

Change-Id: If2a034f727e09172dc5bf3d42a9c205df449ca72
Closes-Bug: #1223242
backport: havana
Add auth_protocol and auth_port to controller

The auth_protocol and auth_port settings were note being provided on the
controller.

Change-Id: Ia48c1f281aa1b10ae429724a74d734e146091d67
Closes-Bug: #1252602
backport: havana
Merge "Add auth_protocol and auth_port to controller"
Merge "Fix GroupAffinityFilter and GroupAntiAffinityFilter doc"