KEP-2170: Adding CEL validations on v2 TrainJob CRD #1565

Job	Run time
integration-test (v1.29.2, none, 3.10)	18m 35s
integration-test (v1.27.11, none, 3.11)	16m 58s
integration-test (v1.28.7, none, 3.8)	18m 48s
integration-test (v1.29.2, scheduler-plugins, 3.9)	18m 4s
integration-test (v1.27.11, scheduler-plugins, 3.10)	17m 48s
integration-test (v1.28.7, scheduler-plugins, 3.11)	17m 4s
integration-test (v1.29.2, volcano, 3.8)	17m 16s
integration-test (v1.27.11, volcano, 3.9)	15m 39s
integration-test (v1.28.7, volcano, 3.10)	18m 11s
	2h 38m 23s

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