CBQE-0: plot_use_cbmonitor with report type

Change-Id: I174e554fa1ca87913f9b658e979a1f3cab21c913
Reviewed-on: http://review.couchbase.org/27691
Reviewed-by: Chisheng Hong <chisheng@couchbase.com>
Tested-by: Andrei Baranouski <andrei.baranouski@gmail.com>