'copy pem files to /mnt on image host'

def _transfer_pem_files(self):

    conn = self.host_ssh
    pkey_dest = ('/mnt/' + os.path.basename(self.private_key))
    cert_dest = ('/mnt/' + os.path.basename(self.cert))
    conn.put(self.private_key, pkey_dest)
    conn.put(self.cert, cert_dest)
