chore: Flatten validating webhook packages #2671

Job	Run time
setup	18s
e2e-istio	9m 5s
e2e-self-mon (logs, healthy)	6m 7s
e2e-dev (logs)	5m 5s
e2e-self-mon (logs, backpressure)	8m 7s
e2e (logs)	10m 13s
e2e-dev (metrics)	4m 58s
e2e-self-mon (logs, outage)	8m 37s
e2e (metrics && set_a)	10m 45s
e2e-dev (traces)	4m 56s
e2e-self-mon (metrics, healthy)	6m 8s
e2e (metrics && set_b)	7m 57s
e2e-self-mon (metrics, backpressure)	10m 37s
e2e (traces)	7m 46s
e2e-self-mon (metrics, outage)	11m 6s
e2e (telemetry)	7m 25s
e2e-self-mon (traces, healthy)	6m 9s
e2e (max-pipeline)	4m 54s
e2e-self-mon (traces, backpressure)	7m 41s
e2e-self-mon (traces, outage)	11m 37s
e2e (telemetry-log-analysis)	11m 4s
	2h 40m 35s

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