Tag LMS Unit 3 tests that fail in Django 1.11

common/djangoapps/course_modes/tests/test_views.py

lms/djangoapps/courseware/tests/test_submitting_problems.py

...oapps/instructor/tests/views/test_instructor_dashboard.py

lms/djangoapps/instructor_task/tests/test_integration.py

lms/djangoapps/lti_provider/tests/test_views.py

lms/djangoapps/shoppingcart/tests/test_views.py

lms/djangoapps/student_account/test/test_views.py

lms/djangoapps/support/tests/test_views.py

openedx/core/djangoapps/external_auth/tests/test_shib.py