MB-12564: added services list node infos in REST API

Change-Id: Ia3fb4ba5b4be9efaae1322af93ef4d60f8639ac7
Reviewed-on: http://review.couchbase.org/42881
Tested-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>
Reviewed-by: Artem Stemkovski <artem@couchbase.com>