Speed up tests in CI (#2595) #6520

Job	Run time
End-to-end tests e2e on K8s 1.23	8m 50s
End-to-end tests e2e-instrumentation on K8s 1.23	8m 48s
End-to-end tests e2e-upgrade on K8s 1.23	8m 7s
End-to-end tests e2e-autoscale on K8s 1.23	7m 29s
End-to-end tests e2e-pdb on K8s 1.23	7m 17s
End-to-end tests e2e-opampbridge on K8s 1.23	7m 25s
End-to-end tests e2e-prometheuscr on K8s 1.23	7m 41s
End-to-end tests e2e-multi-instrumentation on K8s 1.23	8m 36s
End-to-end tests e2e on K8s 1.29	14m 19s
End-to-end tests e2e-instrumentation on K8s 1.29	9m 19s
End-to-end tests e2e-upgrade on K8s 1.29	7m 52s
End-to-end tests e2e-autoscale on K8s 1.29	7m 33s
End-to-end tests e2e-pdb on K8s 1.29	7m 29s
End-to-end tests e2e-opampbridge on K8s 1.29	7m 12s
End-to-end tests e2e-prometheuscr on K8s 1.29	7m 31s
End-to-end tests e2e-multi-instrumentation on K8s 1.29	9m 8s
e2e-tests-check	1s
	2h 14m 37s

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