CI: K8sAgentIstioTest Istio Bookinfo Demo Tests bookinfo inter-service connectivity: klog errors

[pchaigno]

I believe we just need to perform the same investigation as for #16402 and probably allowlist the error messages in CI:

Found 2 io.cilium/app=operator logs matching list of errors that must be investigated:
2023-02-03T19:53:32.534753366Z level=error msg="Failed to release lock: etcdserver: request timed out" subsys=klog
2023-02-03T19:54:05.373238403Z level=error msg="Failed to update lock: Put \"[https://10.96.0.1:443/apis/coordination.k8s.io/v1/namespaces/kube-system/leases/cilium-operator-resource-lock\":](https://10.96.0.1/apis/coordination.k8s.io/v1/namespaces/kube-system/leases/cilium-operator-resource-lock/) context deadline exceeded" subsys=klog

Jenkins: https://jenkins.cilium.io/job/Cilium-PR-K8s-1.24-kernel-4.9/28/testReport/junit/Suite-k8s-1/24/K8sAgentIstioTest_Istio_Bookinfo_Demo_Tests_bookinfo_inter_service_connectivity/
Sysdump:
a44b52b0_K8sAgentIstioTest_Istio_Bookinfo_Demo_Tests_bookinfo_inter-service_connectivity.zip

Note it looks like it happened before at least once, although we also had another issue in that report: #23318.

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