Comment 12 for bug 1761629

Reviewed: https://review.openstack.org/562888
Committed: https://git.openstack.org/cgit/openstack/heat/commit/?id=b76d18730d1e4f110d720cfaba980b4cda9e561c
Submitter: Zuul
Branch: stable/queens

commit b76d18730d1e4f110d720cfaba980b4cda9e561c
Author: Seyeong Kim <email address hidden>
Date: Thu Apr 5 15:10:01 2018 -0700

    Fixing unicode issue when to_dict is called on py2.7 env

    When using non-unicode old style user id such as Gāo
    Unicode error popup on py2.7 environment
    Fixing it on common/context.py

    Change-Id: I95e49f359410049ff5b254cd1b8ee16402c8719d
    Closes-Bug: #1761629
    (cherry picked from commit 4d71926b3afc50c3f16378de260b86a85e8d721d)