Request: guardrail for k8s charms

Hi team,

Could you help add a track guardrail to the following charms?

  • opentelemetry-collector-k8s
  • k6-k8s

I would like to create a track named 1 and/or 1-lts, and allow for easy creation of tracks numbered after integers. The requested guardrail pattern would be \d+(-lts)?. Let me know if this is good enough, or if you need more information.

CC: @sed-i

Thanks!