MB-9979 Expose recovery type in node info.

Change-Id: Ibc8af128760e96b7767e9fb738da7a57c638fa2a
Reviewed-on: http://review.couchbase.org/34225
Tested-by: Aliaksey Artamonau <aliaksiej.artamonau@gmail.com>
Reviewed-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>