docs: def read_creds_from_ec2_instance_metadata():
      """
      Read credentials from EC2 instance metadata (IAM role)
  
      :return:
      """
      creds = init_creds()
      try:
          has_role = requests.get('http://169.254.169.254/latest/meta-data/iam/security-credentials', timeout = 1)
          if has_role.status_code == 200:
              iam_role = has_role.text
              credentials = requests.get('http://169.254.169.254/latest/meta-data/iam/security-credentials/%s/' %
                                         iam_role.strip()).json()
              for c in ['AccessKeyId', 'SecretAccessKey']:
                  creds[c] = credentials[c]
              creds['SessionToken'] = credentials['Token']
          return creds
      except Exception as e:
          return False