'Updates the name and/or the path of the specified server certificate.
:type cert_name: string
:param cert_name: The name of the server certificate that you want
to update.
:type new_cert_name: string
:param new_cert_name: The new name for the server certificate.
Include this only if you are updating the
server certificate\'s name.
:type new_path: string
:param new_path: If provided, the path of the certificate will be
changed to this path.'

def update_server_cert(self, cert_name, new_cert_name=None, new_path=None):

    params = {'ServerCertificateName': cert_name}
    if new_cert_name:
        params['NewServerCertificateName'] = new_cert_name
    if new_path:
        params['NewPath'] = new_path
    return self.get_response('UpdateServerCertificate', params)
