Merge pull request #12630 from cpennington/dont-leak-current-requests-in-tests

cms/djangoapps/contentstore/views/error.py

cms/djangoapps/course_creators/tests/test_views.py

cms/envs/common.py

cms/urls.py

common/djangoapps/edxmako/request_context.py

common/djangoapps/edxmako/shortcuts.py

common/djangoapps/edxmako/template.py

common/djangoapps/edxmako/tests.py

common/djangoapps/external_auth/tests/test_shib.py

common/djangoapps/external_auth/tests/test_ssl.py

common/djangoapps/request_cache/__init__.py

common/djangoapps/request_cache/middleware.py

common/djangoapps/student/tests/test_create_account.py

common/djangoapps/student/tests/test_email.py

common/djangoapps/student/tests/test_password_policy.py

common/djangoapps/third_party_auth/tests/specs/base.py

lms/djangoapps/branding/tests/test_page.py

lms/djangoapps/ccx/tests/test_field_override_performance.py

lms/djangoapps/courseware/tests/test_access.py

lms/djangoapps/courseware/tests/test_views.py