MB-10788: return vbucket uuid and seq number to mutations

For the commands set/add/replace/append/prepend/set_with_meta
and delete_with_meta, return the vbucket uuid and sequence
number of the associated mutation.

Change-Id: I9c5a81a14c043e3551f767c829ca5af04ec1ff58
Reviewed-on: http://review.couchbase.org/44323
Reviewed-by: Chiyoung Seo <chiyoung@couchbase.com>
Tested-by: Sriram Ganesan <sriram@couchbase.com>