Feature Request: ability to filter on labels on started playgrounds #65
Description
My use case is I'm creating a number of playgrounds, each with several severs in them, and then one playground with an ephemeral jumpbox I want to use to run commands against the rest of the clusters. I start these by passing in yaml config to a labctl playground start flexbox -f command, and then I'd like to grab the playground ID of the one playground that only has the jumpbox in it.
Because these are all essentially clones, the labctl playground list -f command isn't that helpful.
It would be great if we could add labels while creating these playgrounds and then filter on those via labctl.