mef_eline new test case to cover set_queue 1 (number diff than 0) with data plane ping too

[viniarck]

We do have proper coverage for set_queue action when updating an EVC on this test case test_120_patch_queue_id, but it'd be good to also either augment this one to include data plane ping or add a new one. It's expected that the queue id shouldn't impact, and the existing test case is already good since it's checking for the flow on the switch so it's guaranteed that the switch didn't reject it. But, it'd be nice to know that ping also succeeds in this case.