Fixed undefined method 'role_name' when running iamip

[Avolynsk]

This error appears because sometimes AWS can return to you a list of instance profiles including deleted ones (as I understood this).

So, if an instance profile is actually deleted - it can't be matched with any IAM role and we getting "undefined method 'role_name'" then.

My fix is checking if profile.roles list is empty. If not - well, this profile really exists and we can get an IAM role for it, so we should add it to .tf file.

[coveralls]

Coverage decreased (-0.5%) to 99.494% when pulling ce754d0 on Avolynsk:fix-iamip-exception into 1ba96b9 on dtan4:master.

[coveralls]

Coverage remained the same at 100.0% when pulling c13ad61 on Avolynsk:fix-iamip-exception into 50e09f9 on dtan4:master.

[dtan4]

Please merge the current master branch, then resolve conflicts 🙏

[Avolynsk]

Please merge the current master branch, then resolve conflicts

done