Fix output when deploying from configuration

What does this MR do?

When the Orka provider is configured to use VM configurations, virtual machines don't have names. The name is the name of the configuration, and we get a unique ID after the prepare step.

So we need to make changes to the way we print this information for it to remain consistent:

• the name of the VM is returned to the runner as part of the config stage. This is only used to print out the via part of this statement: Running on Gitlabs-iPro via runner-orka-canary-1572770993.... This MR adds a new provider method VMNameForRunner, which is empty in that case, so that the runner only prints Running on Gitlabs-iPro...
• VMNameForRunner returns VMName in the GCP provider and in Orka when not deploying from configurations
• in the DeployFromConfig case, restore printing the chosen configuration and alias to the build log
• Finally, print the VM ID to the build log in both cases, so finding the VM running a job is easy

before

Running on Gitlabs-iPro via runner-orka-canary-1572770993...

after

Using image macos-11-xcode-12 (aliased to "ork-11-12-202109061639")
Waiting for machine 89323746a3425 to boot...
Running on Gitlabs-iPro...

Why was this MR needed?

What's the best way to test this MR?

From https://gitlab.com/akohlbecker/playground/-/jobs/1589647457

What are the relevant issue numbers?