Add parameter to control setting the region in the .aws/credentials file

[David-HH-Dev]

Hi @victorskl,

I came across the issue reported in #76 because I was wondering why the aws clients are telling me that there is no default region defined in the profile. It has been working before, but then since I updated yawsso I started to have an issue. So actually my request would be the opposite as what is explained in #76. Do you think it would be possible to implement a parameter so that you can define whether you want the region in the credentials file or not? Something like a switch "-r" to tell it to copy the region for example?
yawsso -p dev:foo -r

[victorskl]

Okay. Let me see to this.

[victorskl]

The yawsso-1.2.0 out.!

pip install -U yawsso==1.2.0

This works now;

yawsso -p dev:foo -r

yawsso --help
  <...>
  -r, --region          Add region to credentials file