Add probes to IntegrationSource & -Sink deployments #10460

Job	Run time
e2e tests (v1.34.x, ./test/experimental)	16m 55s
e2e tests (v1.34.x, ./test/conformance)	23m 40s
e2e tests (v1.33.x, ./test/experimental)	16m 54s
e2e tests (v1.34.x, ./test/e2e)	20m 54s
e2e tests (v1.33.x, ./test/conformance)	21m 39s
e2e tests (v1.35.x, ./test/experimental)	15m 55s
e2e tests (v1.33.x, ./test/e2e)	21m 43s
e2e tests (v1.35.x, ./test/conformance)	23m 0s
e2e tests (v1.35.x, ./test/e2e)	22m 36s
	3h 3m 16s

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