8. Setup TLS certificate on XL linux runner-manager VMs

For each of the Runner manager VMs:

• ssh into the host.
• view the content of the /etc/gitlab-runner/config.toml file.
• convert the MachineOptions into a format that is readable by the docker-machine create command.
• create a test VM.

reference issue: https://gitlab.com/gitlab-com/gl-infra/reliability/-/issues/23692