ctdb-daemon: Do not process tickle updates for hosted IP addresses

ctdb-daemon: Do not process tickle updates for hosted IP addresses

Tickle list updates are broadcast to all connected nodes and are
accepted even when received on the same node that sent them.  This
could actually lead to lost connection information when information
about new connections is received while an update is in-flight.

Instead, return early when the IP is hosted on the current node, since
it is the only one that could have sent the update.

Signed-off-by: Martin Schwenke <martin@meltin.net>
Reviewed-by: Amitay Isaacs <amitay@gmail.com>