Add support for ruby 3.1.0, compose for coverage

[dwillett]

Adding a similar docker-compose ruby version coverage setup as k8s-ruby, bringing in compatibility for ruby 3.1.0 and Psych's changed method signatures.

This update is prerequisite for 3.1 support in k8s-ruby: k8s-ruby/k8s-ruby#29

[dwillett]

Not sure about updating the travis CI coverage or if that's still active, feel free to edit or advise any update there

[matti]

no idea about travis - thanks for this, I'll merge this shortly. didnt get notification from github, that's why it has taken some time :(

[matti]

aaah haha - this is not k8s-ruby repo :D - sorry

[dwillett]

Ha okay yeah, that was my original concern. Is there anyone available to review/merge/publish from this repo?

[matti]

@dwillett what about just forking and using the fork?

[dwillett]

Yeah it makes sense to me to fork it into k8s-ruby org and maybe just publish under another new name going forward?

[matti]

yes!

[dwillett]

Do you have full access to fork into k8s-ruby org?

[matti]

@dwillett yes, and you should do. Anyway I just hit fork.

[dwillett]

I am only marked as an outside collaborator on the one repository, so I don't have much access right now

[matti]

tried to give full admin rights

[clintoncwolfe]

Hey, just chiming in here, we'd like to see Ruby 3.1 support in k8s-ruby and getting this PR merged and an updated gem published is need for that. Could that happen? If not, hate to do it, but we're motivated to (re-)fork and rename again, as suggested above.

Looks like as of now it has been forked into https://github.com/k8s-ruby/yaml-safe_load_stream2 but no other work was done.