CBQE-1356 automate cbworkloadgen tool test

Change-Id: I302f3edf34dcdda45731b6e9af50a4fc112ebd5b
Reviewed-on: http://review.couchbase.org/27370
Reviewed-by: Chisheng Hong <chisheng@couchbase.com>
Tested-by: Chisheng Hong <chisheng@couchbase.com>
MB-100: modified litmus tests

Change-Id: I409a25b75b3d533bcda7dafcf6bf4ca6850d698b
Reviewed-on: http://review.couchbase.org/27382
Reviewed-by: Ronnie Sun <ronnie@couchbase.com>
Tested-by: Ronnie Sun <ronnie@couchbase.com>