docs: def create_bmc(self, os_username, os_password, os_project_id, os_auth_url):
          """Deploy the BMC machine.
  
          This machine hosts the ipmi servers, each ipmi server is associated to a baremetal
          node and has its own IP.
          """
          bmc = ovb_bmc.OvbBmc(
              nova_api=self.nova_api,
              neutron=self.neutron,
              keypair=self._keypair,
              key_filename=self._key_filename,
              security_groups=self._security_groups,
              image_name='Fedora 23 x86_64',
              ip='192.0.2.254',
              os_username=os_username,
              os_password=os_password,
              os_project_id=os_project_id,
              os_auth_url=os_auth_url)
          return bmc