CBQE-0: fix cccp not_my_vbucket parsing

Change-Id: Ia46fefd0cbfaeb0d7e73f41f748998cb82447860
Reviewed-on: http://review.couchbase.org/31349
Reviewed-by: Iryna Mironava <irynamironava@yandex.ru>
Tested-by: Iryna Mironava <irynamironava@yandex.ru>