Sync stable-2.5 test infrastructure with devel: - shippable.yml - test/runner/ - test/sanity/ - test/utils/ - docs/docsite/rst/dev_guide/testing/sanity/ - test/integration/targets/*/aliases
* UCS vNIC templates and integration tests * docs updated * UCS vNIC template and integration test * Update docs and argument_spec for description, mtu, and target.