Canvas has no ability to say an object is for teachers only,
but now that Canvas can have things unpublished, this is a
good mapping for that attribute in CC.
Test Plan:
* import a common cartridge with content marked as for a teacher
* those items should be unpublished
refs PLAT-764
Change-Id: I53eaf5311df887f06bda6fa67435de14ae2fb188
Reviewed-on: https://gerrit.instructure.com/45008
Tested-by: Jenkins <jenkins@instructure.com>
Reviewed-by: Jeremy Stanley <jeremy@instructure.com>
QA-Review: August Thornton <august@instructure.com>
Product-Review: Bracken Mosbacker <bracken@instructure.com>