chore: Refactor logpipeline and logparser validators #2650

Job	Run time
setup	24s
e2e-dev (logs)	6m 16s
e2e-dev (metrics)	6m 20s
e2e-istio	10m 47s
e2e (logs)	11m 32s
e2e-dev (traces)	6m 31s
e2e-self-mon (logs, healthy)	7m 44s
e2e (metrics && set_a)	12m 23s
e2e-self-mon (logs, backpressure)	9m 43s
e2e (metrics && set_b)	9m 36s
e2e-self-mon (logs, outage)	11m 13s
e2e (traces)	12m 10s
e2e-self-mon (metrics, healthy)	7m 15s
e2e (telemetry)	7m 58s
e2e-self-mon (metrics, backpressure)	12m 11s
e2e (max-pipeline)	6m 17s
e2e-self-mon (metrics, outage)	12m 12s
e2e (telemetry-log-analysis)	13m 42s
e2e-self-mon (traces, healthy)	7m 16s
e2e-self-mon (traces, backpressure)	8m 42s
e2e-self-mon (traces, outage)	12m 42s
	3h 12m 54s

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