docs: def _build_ssh_config(self, config):
          """ build the ssh injection configuration """
          ssh_config_injection = ssh_config_template % {
              'host': config.get('host'),
              'hostname': config.get('hostname'),
              'ssh_key_path': config.get('ssh_key_path'),
              'user': config.get('user')
          }
          if config.has('port'):
              ssh_config_injection += "  Port {0}\n".format(config.get('port'))
          return ssh_config_injection