Py3.7 test failures

[Corey Bryant]

I'm hitting 3 test failures with Py3.7 on Ubuntu Cosmic, as can bee seen here: https://paste.ubuntu.com/p/N6VDRGJmKK/

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/587628

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/587628
Committed: https://git.openstack.org/cgit/x/python-glareclient/commit/?id=b1364646f78cf9e24ca9f74a7af093d240c094c0
Submitter: Zuul
Branch: master

commit b1364646f78cf9e24ca9f74a7af093d240c094c0
Author: Corey Bryant <email address hidden>
Date: Tue Jul 31 17:10:20 2018 -0400

    python3 compatibility for failing unit tests

    Handle StopIteration for Py3.7. PEP 0479,
    https://www.python.org/dev/peps/pep-0479/, makes the following
    change: "when StopIteration is raised inside a generator, it is
    replaced it with RuntimeError". And states: "If raise StopIteration
    occurs directly in a generator, simply replace it with return."

    Also fix test cases that make assumptions about the ordering of
    **kwargs. Python, up to 3.6, doesn't preserve any ordering for those.
    And the behavior differs between various Python versions.
    For details see PEP 0468 (https://www.python.org/dev/peps/pep-0468/)

    Change-Id: I9847053534ffd47c4559d504be647be0de25b651
    Closes-Bug: #1784714
    Closes-Bug: #1711469