Upgrade-check id controller is enabled

It was found that when running Ironic upgrade
on conductor node nova compute service is also being
upgraded - it checks the controller version to find out
whether to run offline sycn and since there is no controller pillar
on ironic conductor node the state fails. The patch adds a check
if nova:controller is enabled

Change-Id: Ie50a522d9e92d102cc529662c5829b12e3cd674a
Related-PROD: PROD-24546
(cherry picked from commit 0841459a840bd462e2705cadc801f0589c4b7663)
1 file changed