CCBC-234 Use CCCP protocol to update vbucket configuration

Change-Id: I1fb24cee6ad9c6c4c77f4ac9f192215b846fe488
Reviewed-on: http://review.couchbase.org/30317
Tested-by: Mark Nunberg <mnunberg@haskalah.org>
Reviewed-by: Matt Ingenthron <matt@couchbase.com>
Reviewed-by: Sergey Avseyev <sergey.avseyev@gmail.com>