tests: k8s: Clean up node debuggers after running

This deletes node debugger pods after execution since their presence may
affect tests that assume only test workloads pods are present.

For example, in `k8s-job` we wait for *any* pod to be in the `Succeeded`
state before proceeding, which causes failures.

Fixes: #7452

Signed-off-by: Aurélien Bombo <abombo@microsoft.com>

tests/integration/kubernetes/gha-run.sh

@@ -175,6 +175,7 @@ function get_nodes_and_pods_info() {
 	echo "::endgroup::"
     fi
     kubectl debug $(kubectl get nodes -o name) -it --image=quay.io/kata-containers/kata-debug:latest
+    kubectl get pods -o name | grep node-debugger | xargs kubectl delete
 }
 
 function main() {