add kernel version to telemetry traces.

[jimassa]

heartbeat already comes with kernel version attribute; https://github.com/microsoft/retina/blob/5ff1567e8a988209494b0cddd34f3939ac51e53c/pkg/telemetry/telemetry.go#L170

We would like to add it to traces as well in order to directly pinpoint what kernel version is producing a specific log.

[Anirudh2112]

Hi @jimassa, I would like to contribute to this

[Anirudh2112]

Hello @jimassa I have made the necessary changes and committed a PR. Kindly review it. Thank you.

[matmerr]

isn't it possible to correlate pod name with kernel version in heartbeat?

[Anirudh2112]

Thank you for the suggestion! I will add the pod name to the heartbeat properties to enable correlation with the kernel version. I'll update the PR shortly. Please let me know if there are any other changes/features to be implemented.

[matmerr]

podname should already be a part of telemetry properties, so it should be all good

https://github.com/microsoft/retina/blob/8963dd561d4d5b52c1f711dcbc13fe9f616bd360/pkg/telemetry/telemetry.go#L155

[Anirudh2112]

Yes, In the TrackEvent method, t.properties is merged with the provided event properties, so podname will automatically be included in the heartbeat telemetry.