CBQE-2406 fix rza cli test on windows

Change-Id: Ibf964b3268e50b2cec51ae8bd750b9eb0e4b7a0e
Reviewed-on: http://review.couchbase.org/41236
Reviewed-by: Thuan Nguyen <soccon@gmail.com>
Tested-by: Thuan Nguyen <soccon@gmail.com>