Comment 80 for bug 1596829

Reviewed: https://review.openstack.org/548576
Committed: https://git.openstack.org/cgit/openstack/watcher/commit/?id=403ec94bc1a28e168dc074fe98cadc0e0766f85c
Submitter: Zuul
Branch: stable/queens

commit 403ec94bc1a28e168dc074fe98cadc0e0766f85c
Author: ForestLee <email address hidden>
Date: Mon Jul 17 19:03:02 2017 +0800

    Add a hacking rule for string interpolation at logging

    String interpolation should be delayed to be handled by
    the logging code, rather than being done at the point
    of the logging call.
    See the oslo i18n guideline
    * https://docs.openstack.org/oslo.i18n/latest/user/guidelines.html#adding-variables-to-log-messages
    and
    * https://github.com/openstack-dev/hacking/blob/master/hacking/checks/other.py#L39
    Closes-Bug: #1596829

    Change-Id: Ibba5791669c137be1483805db657beb907030227