MB-24546: Print collection names in the collection stats
MB-24546: Print collection names in the collection stats

Currently we iterate on and setup a buffer to print the collection
name in collections stats, however, we never use it.

Change-Id: I3a36805a48e31e736fe92af60f17484896673f3d
Reviewed-on: http://review.couchbase.org/101077
Tested-by: Build Bot <80754af91bfb6d1073585b046fe0a474ce868509@couchbase.com>
Reviewed-by: Dave Rigby <a09264da4832c7ff1d3bf1608a19f4b870f93750@couchbase.com>

daverigby/kv_engine,daverigby/kv_engine,daverigby/kv_engine,daverigby/kv_engine