credentials Dependencies Support for Django 2.2

Versions in credentials already support Django 2.2

• django-debug-toolbar (https://openedx.atlassian.net/browse/BOM-1274)

• django-extensions

• django-filter (https://openedx.atlassian.net/browse/BOM-1257)

• django-ratelimit (https://openedx.atlassian.net/browse/BOM-1259)

• django-ses

• django-sortedm2m

• django-statici18n

• django-storages

• django-waffle

• djangorestframework

• drf-jwt

• edx-ace (https://openedx.atlassian.net/browse/BOM-1275)

• edx-auth-backends (https://openedx.atlassian.net/browse/BOM-1266)

• edx-django-release-util

• edx-django-sites-extensions

• edx-django-utils

• edx-drf-extensions (https://openedx.atlassian.net/browse/BOM-1045)

• edx-i18n-tools

• edx-opaque-keys

• pylint-django (https://openedx.atlassian.net/browse/BOM-1258)

• pytest-django

• social-auth-app-django (https://openedx.atlassian.net/browse/BOM-1260)

• xss-utils

Support for Django 2.2 on master but not PyPI

• django-appconf (dependency of other packages which have tested for 2.2 support, may just work)

• factory-boy (supports 2.1 in installed version, may just work)

Haven't been tested with Django 2.2 upstream

• django-compat (only used by django-hijack, should go away once it’s upgraded)

• django-hijack (support for 2.1 is on master, may just work with 2.2)

• django-rest-swagger (deprecated, supports 2.1; switch to drf-yasg if this becomes a problem)

• django-webpack-loader

• drf-dynamic-fields (tested with 2.1, may just work with 2.2)

• rest-condition (negligible Django usage beyond DRF, may just work with 2.2)