Comment 6 for bug 1822155

Reviewed: https://review.openstack.org/648459
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=97923ae4a89217f90417d2561a1366e8aacd7f25
Submitter: Zuul
Branch: master

commit 97923ae4a89217f90417d2561a1366e8aacd7f25
Author: LIU Yulong <email address hidden>
Date: Fri Mar 29 00:16:10 2019 +0800

    Convert int to bytes for py3

    The following error raised during the functional test:
    "TypeError: unsupported operand type(s) for %: 'bytes' and 'int'"
    This patch converts the string to bytes for py3.

    Closes-Bug: #1822155
    Change-Id: I3de92ef830e5f424aa83b57d8ed843a7c4349e8a