Add AWS Temporary credentials support in BitOps

[PhillypHenning]

Describe the solution you'd like
A clear and concise description of what you want to happen.

AC

• Add a new option to the aws plugin that will enable ENV_VAR file save for the AWS credentials

[shyamrayaprolu]

This ticket is created to make sure BitOps V2 supports both static and temporary aws credentials.

Implement following logic:

mkdir -p /root/.aws
cat <<EOF > /root/.aws/credentials
[default]
aws_access_key_id = "${AWS_ACCESS_KEY_ID}"
aws_secret_access_key = "${AWS_SECRET_ACCESS_KEY}"
EOF

if [ -n "$AWS_SESSION_TOKEN" ]; then
  echo "aws_session_token = $AWS_SESSION_TOKEN" >> /root/.aws/credentials
fi