In the recovery daemon, keep track of which node we have assigned public ip

In the recovery daemon, keep track of which node we have assigned public ip
addresses and verify that the remote nodes have/keep a consistent view of
assigned addresses.

If a remote node has an inconsistent view of addresses visavi the recovery
master this will trigger a full ip reallocation.
(cherry picked from commit f3bf2ab61f8dbbc806ec23a68a87aaedd458e712)

Conflicts:

	include/ctdb_private.h