Support for SSH Public Key Provisioning for vr-sros

[mabra94]

Added support to automatically provision SSH public keys into vr-sros nodes.
Used the embed function to store my config command template in a dedicated external file. I liked this approach better than to specify the commands directly in the vr-sros.go file.

I created a dedicated function for the health check/readiness probe.

I would like to improve sessions handling a bit though. I would prefer to re-use the same session for the readiness probe, the applyPartialConfig and the applyDefaultConfig functions. Although it works as is, I would be also happy about a pointer on how to improve this.

[hellt]

Hi @mabra94
thanks a lot for your contribution! I am currently on a business trip, so the review will be delayed a bit, but from what I see in the pipeline regarding the failed tests is that the CI (and local dev) is set to use Go 1.20, where slices package hasn't been promoted to stdlib just yet.
You can swap it to "golang.org/x/exp/slices" to make it work

[mabra94]

Thanks for the pointer. Did that

[hellt]

superseded by #1706