Add CCCP Support

This adds CCCP support to the mock itself, with an option for
enabling/disabling it on a per-bucket, per-server basis

Change-Id: I1fc3978bac8b41d920062fbea1a890265bea3901
Reviewed-on: http://review.couchbase.org/32469
Reviewed-by: Brett Lawson <brett19@gmail.com>
Tested-by: Mark Nunberg <mnunberg@haskalah.org>