The pylint job was switched over to run under python 3, but
the job is not voting and it was apparently missed that the
conversion was causing it to fail.

This updates the version of pylint to one that is actually
supported by python 3 and makes tweaks to our script to
for the minor changes between versions.

Single character change to get rid of the more strict py3
regex string escape character format.

Change-Id: I93124b62c5ee177815457b32f55f5453fc3d387e
Signed-off-by: Sean McGinnis <sean.mcginnis@gmail.com>

os-testr has moved over to use stestr instead of testr. This change
updates the tox.ini file to call stestr directly instead of going
through ostestr and remove testrepository from test-requirements.txt.

Change-Id: I31fa5fefd610ec783471e15992675bd39ff0ebc4

We want to default to running all tox environments under python 3, so
set the basepython value in each environment.

We do not want to specify a minor version number, because we do not
want to have to update the file every time we upgrade python.

We do not want to set the override once in testenv, because that
breaks the more specific versions used in default environments like
py35 and py36.

Change-Id: I04b87b308a82113a57ea41bde0329e92b07b642e

switch to use OS_VOLUME_API_VERSION = 3 to run
functional tests.

Closes-bug: #1775354
Co-Authored-By: liuyamin <liuyamin@fiberhome.com>
Change-Id: If6c4291aa7d8e85a4f8c1d5665a0e4a72aa1f1d1

Create a tox environment for running the unit tests against the lower
bounds of the dependencies.

Create a lower-constraints.txt to be used to enforce the lower bounds
in those tests.

Add openstack-tox-lower-constraints job to the zuul configuration.

See http://lists.openstack.org/pipermail/openstack-dev/2018-March/128352.html
for more details.

Change-Id: Ib36375525dd11d62d9f5566c714e76876892d9d7
Depends-On: https://review.openstack.org/555034
Signed-off-by: Doug Hellmann <doug@doughellmann.com>

For compliance with the Project Testing Interface as described in:

https://governance.openstack.org/tc/reference/project-testing-interface.html

For more detials information, please refer to:

http://lists.openstack.org/pipermail/openstack-dev/2017-December/125710.html

Change-Id: I7615e33c0d00c56b3ee6cb856a0553e32a1664c6

We do not need tox_install.sh, pip can handle constraints itself
and install the project correctly. Thus update tox.ini and remove
the now obsolete tools/tox_install.sh file.

This follows https://review.openstack.org/#/c/508061 to remove
tools/tox_install.sh.

Change-Id: I1facc619154613670444247ade567882ec84ed85

os-testr has moved over to use stestr instead of testr. While this
is usually compaible with existing settings, there is a warning
that is emitted when .stestr.conf is not present. It is usually
able to fall back to parsing the .testr.conf file, but to be more
correct and to prevent future problems we should update the config.

Change-Id: If553a64f5dded2d47025c947a91f13091f3f5d14

F811 is a little noisy with api_versions.wraps()
decorated methods, but opting to disable it in these
cases seems better than missing problems in the rest
of the code.

Change-Id: I9c46938ab2a442e55f96b5ab6c119c4475afaecd