add sync_gateway to report iterator
add sync_gateway to report iterator

Change-Id: I1f9b2d7ca055a425eebf49e17b5d775910ba0280
Reviewed-on: http://review.couchbase.org/30971
Tested-by: buildbot <80754af91bfb6d1073585b046fe0a474ce868509@couchbase.com>
Reviewed-by: Pavel Paulau <dd88eded64e90046a680e3a6c0828ceb8fe8a0e7@gmail.com>

couchbase/cbmonitor,couchbase/cbmonitor