fix not reported bucket compaction progress
fix not reported bucket compaction progress

Change-Id: Ia85222bdbe19ce0a9da5cf68016b3b7a4b3d1707
Reviewed-on: http://review.couchbase.org/33009
Tested-by: buildbot <80754af91bfb6d1073585b046fe0a474ce868509@couchbase.com>
Reviewed-by: Pavel Paulau <dd88eded64e90046a680e3a6c0828ceb8fe8a0e7@gmail.com>

couchbase/cbmonitor,couchbase/cbmonitor