Fixes instance action exception in "evacuate" API.

'Evacuate' instance action was not created (incl. in the DB) which
caused exception to be raised during action_event_start.

Change-Id: Iec5f0a91f9b08fbdcf3ace1eaa0efbc4d9d8fc04
Fixes: bug 1152512
Merge "Fixes instance action exception in "evacuate" API."