Create regional S3 client for model exporting#79

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laurenyu wants to merge 4 commits intoaws:masterfrom

laurenyu:regional-fixes

Commits on Sep 27, 2018

Commits on Sep 28, 2018

Use 'AWS_REGION' again
laurenyu
committed

Commits on Sep 29, 2018

Undo previous changes
laurenyu
committed