✨ Added tailscale support

[prassanna-ravishankar]

PR descriptionm

Background

Networks that use tailscale have their interface specified in tailscale<vpn-id> like tailscale0 or tailscale1 etc.

By default, the hostname that is picked up by the interactive session is of the local lan interface (or the public ip interface). Technically this doesn't matter, as the ssh session is actually alive, and the cli only points to the wrong address. So even if the interactive session via the cli fails, one could always ssh into the session using the ssh and replacing the target IP stored in the clearml task, by the actual tailscale IP address. But for this one needs to do some digging and look into the clearml task to find out which host the session was launched it

Changes proposed

This PR makes the change of broadcasting the tailscale IP into the task configuration if the --tailscale option is given.

Implementation

• Expose --tailscale as an argument in the CLI
• If it is activated, cycle through network interfaces to identify the first tailscale interface
• Identify the ip address broadcasted by this interface
• Update this information in the task parameters, and ignore the steps of looking for a public ip as earlier