Merge VM boot and test run steps in CI to improve the overall turnaround of VM creation and test runtime. The idea is to have a test running as soon as the VM is created.

If this works out well, we can also elliminate a separate test step in openshift-release repo.

Additional advantage in merging two steps is: currently if booting of single VM fails, we don't run any tests. If we merge them, this single failure won't interrupt the testing.

Proposed approach separated into several phases:

openshift/microshift repository:

• Create a new argument for scenario.sh: "create-and-run" that creates and boots the VM, and then proceeds with testing (similar to currently existing rerun, but without the cleanup part)
• Edit ci_phase_iso_boot.sh to be a no-op (don't create any VMs)
• Edit ci_phase_test.sh:
  • create VMs and run the tests: `create-and-run` instead of `run`
  • Merge logic of of test and iso_boot, so the messaging and other things make sense

openshift/release repository:

• Edit `finalize()` in the tests step, to include boot.log link