Fix for GovCloud support#70

Merged

nficano merged 1 commit intonficano:masterfrom

Logicworks:feature/govcloud-support

Sep 18, 2017

Commits on Sep 18, 2017

modify the role ARN slightly if in govcloud. New GovCloud regions may be added, so included a constant map ARN_PREFIXES for future expansion
Phil Christensen
committed