Description of problem:

after scale down(removing one compute node) the nova service for the removed compute node is still present 


6  | nova-compute     | overcloud-compute-1.localdomain    | nova     | enabled | down  | 2016-05-24T06:19:25.000000 | -
Version-Release number of selected component (if applicable):

The scaled down compute node status still enabled

How reproducible:

100%

Steps to Reproduce:
1.login to cfme
2. go to compute -> infra.. -> providers 
3. click on nodes --> select the compute node you wish to scale down --> configuration --> toggle for maintenance this node
4. click on configuration --> scale this infra provider down

Actual results:

the scale down succeeded but the node compute service status is still present and enabled

Expected results:

do nova service-delete call
For removing the nova service from the removed node

Additional info: