MB-12222: buckets list with buckets details

Change-Id: I97b2185dc37c7191e1e1a5bf69fc1bf11470c1fb
Reviewed-on: http://review.couchbase.org/43364
Reviewed-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>
Tested-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>
MB-12222: extending of scope is a bad idea

Change-Id: I9d9099cf6e62317e80ebd1cd6ecce188ce84c3ef
Reviewed-on: http://review.couchbase.org/44391
Reviewed-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>
Tested-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>