Collect contents of ets tables.

Change-Id: I59bcae43cebcf438c405a64fe21af4c6452bc0bb
Reviewed-on: http://review.couchbase.org/33013
Tested-by: Aliaksey Artamonau <aliaksiej.artamonau@gmail.com>
Reviewed-by: Artem Stemkovski <artem@couchbase.com>