Merge pull request #26706 from edx/BOM-2376-terrain

common/djangoapps/terrain/stubs/edxnotes.py

common/djangoapps/terrain/stubs/http.py

common/djangoapps/terrain/stubs/lti.py

common/djangoapps/terrain/stubs/start.py

common/djangoapps/terrain/stubs/tests/test_edxnotes.py

common/djangoapps/terrain/stubs/tests/test_http.py

common/djangoapps/terrain/stubs/tests/test_lti_stub.py

common/djangoapps/terrain/stubs/tests/test_video.py

common/djangoapps/terrain/stubs/tests/test_xqueue_stub.py

common/djangoapps/terrain/stubs/tests/test_youtube_stub.py

common/djangoapps/terrain/stubs/video_source.py

common/djangoapps/terrain/stubs/xqueue.py

common/djangoapps/terrain/stubs/youtube.py