MB-19864: Refactor the findAllVbucketsForBucket function
MB-19864: Refactor the findAllVbucketsForBucket function

There were some issues with this function not working properly when
the ip address/hostname specified on the command line didn't match
the one in the REST API's. This function has been refactored to
resolve these issues and to use the ClusterManager class for REST
calls.

Change-Id: I3e31508e873fada895651e6a31cc08559d126bc7
Reviewed-on: http://review.couchbase.org/73421
Reviewed-by: Eben Haber <d1abc94d70526bfcf3e4b0ce727cb9a6fbb52a3a@couchbase.com>
Tested-by: Michael Wiederhold <a17fed27eaa842282862ff7c1b9c8395a26ac320@couchbase.com>

couchbase/couchbase-cli,couchbase/couchbase-cli