MB-100 bump mb_master_advertised_version to [3, 0, 0]

Change-Id: I02a807af3fb61e479f062aa6800efcef35f645b4
Reviewed-on: http://review.couchbase.org/29529
Reviewed-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>
Tested-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>