MB-9625: Record Item Creates/Updates (couchstore)

Change-Id: I745ca8f3e6a23c267086ea91ba84acabf6a12155
Reviewed-on: http://review.couchbase.org/32538
Reviewed-by: Chiyoung Seo <chiyoung@couchbase.com>
Tested-by: Chiyoung Seo <chiyoung@couchbase.com>