MB-10653 & MB-10732: log failed over and delta recovery nodes

Change-Id: Ia0d75b3e2306719dc69a7b1dc8831d25e9ee5448
Reviewed-on: http://review.couchbase.org/35217
Tested-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>
Reviewed-by: Aliaksey Artamonau <aliaksiej.artamonau@gmail.com>