`assume_role_with_saml()` fails when `AWS_PROFILE` environment variable is set

[noamcohen97]

Expected Behavior

assume_role_with_saml() should succeed regardless of current AWS credentials validity

Current Behavior

It fail to issue to requests since credentials are invalid

Possible Solution

Use unsigned requests

Steps to Reproduce (for bugs)

1. AWS_PROFILE=test gimme-aws-creds -p test