[SDK] test: Add e2e test for tune function. #821

Job	Run time
e2e (v1.27.11, long-running-resume,from-volume-resume,median-stop)	30m 13s
e2e (v1.27.11, grid,bayesian-optimization,tpe,multivariate-tpe,cma-es,hyperband)	32m 6s
e2e (v1.27.11, file-metrics-collector,pytorchjob-mnist)	29m 33s
e2e (v1.27.11, median-stop-with-json-format,file-metrics-collector-with-json-format)	35m 4s
e2e (v1.28.7, long-running-resume,from-volume-resume,median-stop)	36m 19s
e2e (v1.28.7, grid,bayesian-optimization,tpe,multivariate-tpe,cma-es,hyperband)	35m 28s
e2e (v1.28.7, file-metrics-collector,pytorchjob-mnist)	28m 50s
e2e (v1.28.7, median-stop-with-json-format,file-metrics-collector-with-json-format)	29m 21s
e2e (v1.29.2, long-running-resume,from-volume-resume,median-stop)	29m 29s
e2e (v1.29.2, grid,bayesian-optimization,tpe,multivariate-tpe,cma-es,hyperband)	31m 12s
e2e (v1.29.2, file-metrics-collector,pytorchjob-mnist)	29m 22s
e2e (v1.29.2, median-stop-with-json-format,file-metrics-collector-with-json-format)	30m 20s
	6h 17m 17s

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