pend canvas_cartridge_converter_spec without qti

closes #CNVS-14387

Change-Id: I4a9d5274d5bb782fd03f5371756394d5859c93ad
Reviewed-on: https://gerrit.instructure.com/38061
Reviewed-by: Bryan Madsen <bryan@instructure.com>
Product-Review: Bryan Madsen <bryan@instructure.com>
QA-Review: Bryan Madsen <bryan@instructure.com>
Tested-by: Jenkins <jenkins@instructure.com>