We had this library capped at a release that is a few years old. Now
that we have dropped py2 testing, we can pick up the latest version.

This uncovered a few things to clean up. Mostly the fact that mock is
now a part of the StdLib unittest since Python 3.3.

Change-Id: I27484dd4c25378413ff16e97a35a1a46062357bc
Signed-off-by: Sean McGinnis <sean.mcginnis@gmail.com>

With passing "--detail" argument to "openstack quota list", details
about current usage should be returned.
It is currently supported by Nova and Neutron so details of
resources from those projects can be returned.

Change-Id: I48fda15b34283bb7c66ea18ed28262f48b9229fe
Related-Bug: #1716043

Setting octavia quotas should use "openstack loadbalancer quota set", not
"openstack quota set". The vip parameter had be removed from octavia.
The patch removes '--vips', '--health-monitors', '--l7policies' parameter
in "openstack quota set" command.

Change-Id: Id0046195aa93bae62264d9de7d123cf63bd0fb7e
Task: 19657
Story: 2002016

In reviews we usually check import grouping but it is boring.
By using flake8-import-order plugin, we can avoid this.
It enforces loose checking so it sounds good to use it.
This flake8 plugin is already used in tempest.

Note that flake8-import-order version is pinned to avoid unexpected
breakage of pep8 job.

Setup for unit tests of hacking rules is tweaked to disable
flake8-import-order checks. This extension assumes an actual file exists
and causes hacking rule unit tests.

Change-Id: I12b596820727aeeb379bee16c2bc993dee9eb637

Additional exceptions can be thrown here, ignore additional project
lookup exceptions, but still not all.  Server failures are still
interesting, for example.

Change-Id: I9a750ae8e8efa29a36bbd1e34b50b6ace0658260

The quota list tests have a race in them where occasionally a project is
deleted in another test between the time that quota list gets a list of all
projects and it gets the quota for the projects from the service; the get
quota call fails on the non-existant project.

The quota list functional tests have been substantially re-written to
properly test the exception handling.

Change-Id: I71e6bbb5d46fcea4718a5a870f9a66a2c20fff0f

Implement Neutron feature of Quota List into
OpenStack Client.

Change-Id: Idf941acf8d00b136776b7381b877c56d82622f57
Partially-Implements: blueprint neutron-client-quota

quota set and quota show command have been fixed
by [1] [2], now can revert the unit test as well

[1] https://review.openstack.org/435574
[2] https://review.openstack.org/435735

Change-Id: I3d592df6ea4e96770dac4dba91819b5c4bcb0561