Test SKAO runners
The runners are registered with the name "ska-tango-runner" and the labels "gitlab_runner_tags: "linux-amd64, docker-amd64, dind-amd64, skao-tango"
This MR adds a simple pipeline job that uses the runners to see if it is active and can pick up jobs
After making sure it picks the runner up correctly, I'll base this on !1 so that we have a more complete test
Edited by Ugur Yilmaz