CBQE-1142: More testcases for cbR

Change-Id: I302a8ae4635b6189d98b70173cebddba337e4a73
Reviewed-on: http://review.couchbase.org/26357
Reviewed-by: abhinav dangeti <abhinav.dangeti@gmail.com>
Tested-by: abhinav dangeti <abhinav.dangeti@gmail.com>