New feature: ability to delete IAM roles

[zackproser]

To assist with hitting the IAM roles limit in AWS - we could use the ability to delete IAM roles - but to also provide a list of roles that should be preserved and not deleted.

[brikis98]

I think we'd want to support specifying regular expressions for which IAM roles to delete via the config file.

[byarbrough]

Related to #116, which addresses IAM users and policies

[ina-stoyanova]

@zackproser I see you've had some thoughts here and assigned @rhoboat. I wonder what's the latest on this issue? Is there any action for us to take?

[zackproser]

@ina-stoyanova Hmm, from looking through internal messages it seems we initially were planning to use this one as a trial project? I'm not sure now why I assigned it to Rho - unless they were going to take a look at this?

[ina-stoyanova]

Hm, ok! Thanks for sharing!

I think in that case, I'll leave this issue open, as it's still a desired feature.

[zackproser]

Support for IAM Roles and regex matching via config file were added in #330