Log local address of a follower to leader connection.

Change-Id: Iacbef2651f8f1ec65dd96699ae1f948fa2d81b3d
Reviewed-on: http://review.couchbase.org/43809
Tested-by: Aliaksey Artamonau <aliaksiej.artamonau@gmail.com>
Reviewed-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>