Revert "Revert "spec: vendored_gems coverage result merge with canvas""

This reverts commit 7c29516091b41011e5193003b605f1ead99c8fd6.

Change-Id: I37c31c26dcb4456664714848a7b9cb12ab40a755
Reviewed-on: https://gerrit.instructure.com/30900
Tested-by: Jenkins <jenkins@instructure.com>
Reviewed-by: Shawn Meredith <shawn@instructure.com>
Product-Review: Shawn Meredith <shawn@instructure.com>
QA-Review: Shawn Meredith <shawn@instructure.com>