TMSS-134: Switch from LDAP to OpenID Connect, add dockerized identity provider for testing

SAS/TMSS/src/remakemigrations.py

SAS/TMSS/src/tmss/settings.py

...SS/src/tmss/tmssapp/migrations/0002_auto_20200123_1057.py

SAS/TMSS/src/tmss/tmssapp/migrations/0003_populate.py

...oidc/docker-test-mozilla-django-oidc/.circleci/config.yml

...TMSS/test/oidc/docker-test-mozilla-django-oidc/HISTORY.md

SAS/TMSS/test/oidc/docker-test-mozilla-django-oidc/Makefile

SAS/TMSS/test/oidc/docker-test-mozilla-django-oidc/README.md

...t/oidc/docker-test-mozilla-django-oidc/docker-compose.yml

...r-test-mozilla-django-oidc/dockerfiles/oidc_e2e_setup_py2

...r-test-mozilla-django-oidc/dockerfiles/oidc_e2e_setup_py3

...er-test-mozilla-django-oidc/dockerfiles/oidc_testprovider

...cker-test-mozilla-django-oidc/dockerfiles/oidc_testrp_py2

...cker-test-mozilla-django-oidc/dockerfiles/oidc_testrp_py3

...cker-test-mozilla-django-oidc/dockerfiles/oidc_testrunner

...c/docker-test-mozilla-django-oidc/testprovider/bin/run.sh

...ocker-test-mozilla-django-oidc/testprovider/fixtures.json

...dc/docker-test-mozilla-django-oidc/testprovider/manage.py

...mozilla-django-oidc/testprovider/oidcprovider/__init__.py

...ngo-oidc/testprovider/oidcprovider/management/__init__.py