Add aws batch #30

Job	Run time
collab-check	4s
wait-for-approval	3s
detect-changes	37s
unit-tests (sagemaker-train)	20m 54s
codestyle-doc-tests (sagemaker-train)	5m 58s
integ-tests (sagemaker-core)	11m 16s
unit-tests (sagemaker-core)	27m 58s
integ-tests (sagemaker-train)	9m 13s
codestyle-doc-tests (sagemaker-core)	18m 14s
	1h 34m 17s

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