'Update a web site.
webspace_name:
The name of the webspace.
website_name:
The name of the website.
state:
The wanted state (\'Running\' or \'Stopped\' accepted)'

def update_site(self, webspace_name, website_name, state=None):

    xml = _XmlSerializer.update_website_to_xml(state)
    return self._perform_put(self._get_sites_details_path(webspace_name, website_name), xml, async=True)
