MB-10681: Enable generation of mutation logs

Change-Id: I2ef6ebdd401d6e648815ab09ad28329bf0c4f16f
Reviewed-on: http://review.couchbase.org/35117
Tested-by: abhinav dangeti <abhinav@couchbase.com>
Reviewed-by: Chiyoung Seo <chiyoung@couchbase.com>