def ensure_key_pair(region)
      pair_name = key_name()
      delete_key_pair(region, pair_name)
      create_new_key_pair(region, pair_name)
    end
def ensure_key_pair(region)
      pair_name = key_name()
      delete_key_pair(region, pair_name)
      create_new_key_pair(region, pair_name)
    end
Creates the KeyPair for this test run

 @param region [Aws::EC2::Region] region to create the key pair in
 @return [Aws::EC2::KeyPair] created key_pair
 @api private