On unstack, cleanup LVM setup for Cinder

Change-Id: I4f01dd65a4e5dd0dff33ea7c0024fb75fe83834b
add support in devstack to run it with cisco plugin

implements blueprint cisco-plugin-support

Change-Id: Ib4716c9ef6daa059d5210631d927253bf2ba6a64
Update the ou name of Group to be the new default of UserGroups

This update sets the ou value for groups to be the new keystone
ldap default of UserGroups

Fixes Bug1191807

Change-Id: I9b7383100045155ca35b04190f42be641a0c6ea8
Merge "Update the ou name of Group to be the new default of UserGroups"
Merge "On unstack, cleanup LVM setup for Cinder"
Merge "add support in devstack to run it with cisco plugin"