Description of problem:




Scale-In procedure in https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux_OpenStack_Platform/7/html/Director_Installation_and_Usage/index.html removes nodes but these are still listed in controller's "nova-manage service list".

Procedure to reproduce the issue:
1. Deploy overcloud (1 controller and 2 computes) following instructions given in Redhat "DIRECTOR INSTALLATION AND USAGE" guide (link given above). 
2. Remove 2 compute nodes following procedure https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux_OpenStack_Platform/7/html/Director_Installation_and_Usage/sect-Removing_Nodes_from_the_Overcloud.html
3. Login to the controller and check the output of the below command:
#nova-manage service list
Result:- 
Binary           Host                                 Zone             Status     State Updated_At
nova-scheduler   overcloud-controller-0.localdomain   internal         enabled    :-)   2015-10-28 13:37:35
nova-consoleauth overcloud-controller-0.localdomain   internal         enabled    :-)   2015-10-28 13:37:41
nova-conductor   overcloud-controller-0.localdomain   internal         enabled    :-)   2015-10-28 13:37:37
nova-compute     overcloud-compute-0.localdomain      nova             enabled    XXX   2015-10-28 13:29:24
nova-compute     overcloud-compute-1.localdomain      nova             enabled    XXX   2015-10-28 12:39:58

Expected Result:-
Binary           Host                                 Zone             Status     State Updated_At
nova-scheduler   overcloud-controller-0.localdomain   internal         enabled    :-)   2015-10-28 13:37:35
nova-consoleauth overcloud-controller-0.localdomain   internal         enabled    :-)   2015-10-28 13:37:41
nova-conductor   overcloud-controller-0.localdomain   internal         enabled    :-)   2015-10-28 13:37:37