aws/session: Fix session test to not depend on modeled endpoint directly (#1596)
aws/session: Fix session test to not depend on modeled endpoint directly (#1596)


yxd-hde/aws-sdk-go,calgaryscientific/aws-sdk-go,aws/aws-sdk-go,jasdel/aws-sdk-go,yxd-hde/aws-sdk-go,calgaryscientific/aws-sdk-go,calgaryscientific/aws-sdk-go,calgaryscientific/aws-sdk-go,yxd-hde/aws-sdk-go,yxd-hde/aws-sdk-go