Add Marconi Smoke Tests

Add smoke tests that check the existence of queues.
Add test that checks list queues.
Add test that gets queue statistics.
Add test that sets and gets queue metadata.

Tests for List Queues and Queue Stats use JSON Schema
validation.

Change-Id: I084d1ae0de4a729a913a7084f14c0d3172af29d3
Implements: blueprint add-basic-marconi-tests
Merge "Add Marconi Smoke Tests"