identifies tetragon pod managing a pod

[SandeshAmin]

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This is slightly modified script of https://raw.githubusercontent.com/cilium/cilium/main/contrib/k8s/k8s-get-cilium-pod.sh . This script helps user to identify tetragon pod running on the same node as a pod.

Fixes: #issue-number

[kkourt]

This is just a script so no need to run CI, we can just merge.