Fix restore bridged interface process
Fix restore bridged interface process

The "provision" execution after the "cleanup" fails because of the wrong
condition in the following two tasks:
- "delete the bridge and attached interface"
  The rc exit code is an integer, but compared to a string.
  Change the string to the integer.

- "restart network"
  The NetworkManager should be restarted when the NetworkManager.service
  exists within the gathered service tasks.
  But it is looking for a "network.service" while should looking for a
  "NetworkManager.service".

Change-Id: If17a1aa9c1e58166651f3cb0ef633e0825beb215

redhat-openstack/infrared,redhat-openstack/infrared,redhat-openstack/infrared