Ensure code generation dependencies are downloaded #1761

Job	Run time
integration-test (v1.30.6, none, 3.10)	15m 46s
integration-test (v1.29.2, none, 3.10)	16m 42s
integration-test (v1.28.7, none, 3.8)	15m 53s
integration-test (v1.30.6, scheduler-plugins, 3.10)	19m 40s
integration-test (v1.29.2, scheduler-plugins, 3.9)	17m 48s
integration-test (v1.28.7, scheduler-plugins, 3.11)	17m 22s
integration-test (v1.30.6, volcano, 3.10)	17m 45s
integration-test (v1.29.2, volcano, 3.8)	17m 18s
integration-test (v1.28.7, volcano, 3.10)	15m 45s
	2h 33m 59s

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