Constrain ddt<1.4.0 until this issue is fixed:
- https://github.com/datadriventests/ddt/issues/83

These were pinned because they drop support for Django<2.2 (or were
planning on it, in the latter case.)

No related changes in computed requirements.

See ARCHBOM-1141 for details.  Effort required to upgrade pip.

ARCHBOM-1141:

This adds contraints to:
kiwisolver: next release only works with python>=3.6

The was run to upgrade:
django-splash
django-wiki
edx-search
The previous versions were constraining django below 2.0.

Co-authored-by: Robert Raposa <rraposa@edx.org>

We'll upgrade this again along with pytest once pytest-dev/pytest#6925 is resolved.

Also, it looks like a flaky error in test class DB setup outside a transaction was mucking things up for the rest of the test shard. I didn't try to fix the flakiness, but this should at least limit the blast radius to just that test class. We really need to start using setUpTestData() more consistently.

Also pinned httpretty < 1.0 because that upgrade broke many tests.

-Upgrade edx-drf-extensions
-settings-update

This partially reverts #23318.

The last time we tried this upgrade we encountered timeouts on the quality job, which it now appears were due to the worker running pylint common running out of memory and killing the Jenkins process. Switching to a different worker type with double the RAM (8 GB vs. 4 GB) seems to have fixed this; about 5.5 GB was used. Upstream is aware of the high memory usage on large projects, it's apparently due primarily to a cache of parsed modules: https://github.com/PyCQA/pylint/issues/1495 .

Even after disabling some of the new checks that have been added, the new version of pylint found about twice as much to complain about. Just bumping the threshold for now to unblock the Django upgrade, we can try automated utilities like pyupgrade to fix some of these later.

try to fix github

Remove duplicate constraints in requirements/constraints.txt uncovered by the recent change in pip-compile output format. I sorted the pinned dependencies by name to try and make it more obvious if this happens again. I also upgraded to pip-tools 4.5.1, which removes the line numbers from the enhanced pip-compile output added in 4.5.0, which should reduce future diff churn and merge conflicts but means that there's a large diff this one last time.

Also unpin edx-search again after the previous change to do that was apparently broken by a merge conflict.

- Reimplement `djcelery.common.respect_language` utility function so we
  can drop the dependency.
- Loosen `celery` pinning to a range, which brings in a fix for a
  possible crash bug

Also, pin `path` to 13.1.0 for now in order to continue supporting py35.

There is a planned edx-drf-extension update to 3.0.0 to remove the
toggle used for ENFORCE_JWT_SCOPES. Currently, edx-platform is dependent
on the this toggle. This constraint will keep other `make upgrade` PRs
working in the short window before the edx-paltform PR to remove the
same toggle can land.

BOM-1324

Upgrade django-toolbar.

https://openedx.atlassian.net/browse/BOM-1036

* Updating Python Requirements

* Constrain edx-when version for now

-Updated middleware setting to use use middleware insted of
middleware_classes
-github install of django-method-override fork to support
new style middleware in django1.11

Fix constraints to not have a lingering pin on edx-when. And
add constraint on version of mock that supports python 3.5.

And then a general make upgrade.

* Bumping edx-enterprise version

* Running make upgrade to bump edx-enterprise

* contraining a package

* fix

* adding yet another constraint

* Constraining edx-rest-api-client

* Decreased pin on edx-rest-api-client from <3.0.0 to <2.0.0

Unpin several more outdated dependencies whose changelogs don't contain any significant backwards incompatible changes. Also add "moto" to the list of packages to uninstall from existing environments, since it requires a jsondiff version that clashes with the one we now use (triggering a harmless but distracting warning on dependency updates).

We can potentially stop using path.py/path altogether by switching to pathlib in the Python 3 standard library, but that merits a separate PR of its own.

Also, note that I'm not actually unpinning freezegun; different PRs restricted it in both constraints.txt and test.in, I'm just removing the latter redundant constraint.

Removing the moto.