MB-10459: added sslServerList to bucket info

So that clients can discover ssl ports in accordance with our
agreement with sdk people.

Change-Id: If8d9a03e81dffa567269daf4c46753a568bb479b
Reviewed-on: http://review.couchbase.org/34686
Tested-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>
Reviewed-by: Matt Ingenthron <matt@couchbase.com>
Reviewed-by: Aliaksey Artamonau <aliaksiej.artamonau@gmail.com>