Sync running_deleted_instance_action for nova

* Sync running_deleted_instance_action=reap from nova upstream
  in order to make all instaces at compute nodes being consistent
  with the Nova DB state.
* In Havana release the default value was 'log' and that was a cause
  of the flopping nova-computes and their queues uncontrolled grow
  due to the DB inconsistent state.
See
https://github.com/openstack/nova/blob/master/nova/compute/manager.py
poke ci

Closes-bug: #1317488

Change-Id: I6de6898ab2e1c7e327eea0cd79c82f4fa6a94bb0
Signed-off-by: Bogdan Dobrelya <bdobrelia@mirantis.com>