'Rescue a node
:param      node: node
:type       node: :class:`Node`
:param      password: password
:type       password: ``str``
:rtype: :class:`Node`'

def ex_rescue(self, node, password=None):

    if password:
        resp = self._node_action(node, 'rescue', adminPass=password)
    else:
        resp = self._node_action(node, 'rescue')
        password = json.loads(resp.body)['adminPass']
    node.extra['password'] = password
    return node
