KEP-2170: Initialize runtimes before the manager starts #1605

Job	Run time
integration-test (v1.29.2, none, 3.10)	16m 51s
integration-test (v1.29.2, none, 3.10)	16m 51s
integration-test (v1.27.11, none, 3.11)	17m 42s
integration-test (v1.27.11, none, 3.11)	17m 42s
integration-test (v1.28.7, none, 3.8)	17m 27s
integration-test (v1.28.7, none, 3.8)	17m 27s
integration-test (v1.29.2, scheduler-plugins, 3.9)	16m 17s
integration-test (v1.29.2, scheduler-plugins, 3.9)	16m 17s
integration-test (v1.27.11, scheduler-plugins, 3.10)	16m 28s
integration-test (v1.27.11, scheduler-plugins, 3.10)	16m 28s
integration-test (v1.28.7, scheduler-plugins, 3.11)	18m 52s
integration-test (v1.28.7, scheduler-plugins, 3.11)	18m 52s
integration-test (v1.29.2, volcano, 3.8)	15m 40s
integration-test (v1.29.2, volcano, 3.8)	15m 40s
integration-test (v1.27.11, volcano, 3.9)	18m 46s
integration-test (v1.27.11, volcano, 3.9)	18m 46s
integration-test (v1.28.7, volcano, 3.10)	30m 46s
integration-test (v1.28.7, volcano, 3.10)	16m 27s
	5h 23m 19s

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