MB-100: revised tahoe in

Change-Id: Ia36c29a6371d14c997b80c0de63bb8768ec06a08
Reviewed-on: http://review.couchbase.org/27346
Reviewed-by: Ronnie Sun <ronnie@couchbase.com>
Tested-by: Ronnie Sun <ronnie@couchbase.com>
CBQE-1127 check bucket type before insert key using mc_bin_client

Change-Id: I167b6ec887498953956eda8ca57c6a065254b96b
Reviewed-on: http://review.couchbase.org/27324
Tested-by: buildbot <build@couchbase.com>
Reviewed-by: Tommie McAfee <tommie@couchbase.com>
MB-100: revised mixed litmus test

Change-Id: Ie45c6356cb835b3a4821260361fbe77326eb29e7
Reviewed-on: http://review.couchbase.org/27357
Reviewed-by: Ronnie Sun <ronnie@couchbase.com>
Tested-by: Ronnie Sun <ronnie@couchbase.com>