Does not support AWS partitions

[gianlucb]

Hi,

I'm would like to use this package to run AWS CLI commands on several AWS accounts. Looks like this does not support all AWS partions (i.e: aws-cn, aws-us-gov):

awsudo/bin/awsudo

Line 79 in 0eb8794

if (!/^arn:aws:iam/.test(argv.arn)) {

is there any plan to support the different aws partitions?

[terodox]

This hasn’t been a use case we’ve needed. We do accept prs though! We’d be happy to merge a PR to expand to other partitions