docs: def enable_neutron_hack(self, os_username, os_password, os_project_id, os_auth_url):
          """Enable the neutron hack on the undercloud.
  
          This script will watch the undercloud and copy any relevant network
          configuration in the host OpenStack. This is required to avoid the
          firewall limitations (no-spoofing and DHCP restriction).
          """
          self.yum_install(['python-neutronclient'])
          self.send_file(pkg_data_filename('static', 'ovb_fix_neutron_addr'), '/usr/local/bin/ovb_fix_neutron_addr', unix_mode=0o755)
          content = """
  [Unit]
  Description=OVB neutron hack Service
  [Service]
  ExecStart=/usr/local/bin/ovb_fix_neutron_addr  --os-user {os_username} --os-password {os_password} --os-project-id {os_project_id} --os-auth-url {os_auth_url}
  User=root
  StandardOutput=kmsg+console
  StandardError=inherit
  Restart=always
  [Install]
  WantedBy=multi-user.target
  """
          unit = 'ovb_fix_neutron_addr.service'
          self.create_file(
              '/usr/lib/systemd/system/%s' % unit,
              content.format(
                  os_username=os_username,
                  os_password=protect_password(os_password),
                  os_project_id=os_project_id,
                  os_auth_url=os_auth_url))
          self.run('systemctl enable %s' % unit)
          self.run('systemctl start %s' % unit)