The 'provisioning_network_uuid' and 'cleaning_network_uuid' options have
been deprecated for 'provisioning_network' and 'cleaning_network'
respectively.

These options now allow either a network UUID or name. The tasks to
determine a UUID from a given network name should no longer be
necessary, but if a deployer provides a UUID prioritize that over the
name within the ironic.conf template.

Change-Id: I85f197e56ced6a73dd470c0625b6d9b5958f5159