Use rails route globbing when that's what we want
Use rails route globbing when that's what we want

This doesn't really matter for accepting requests (other than making the intent clearer)
but it does matter for generating urls, as literal / characters are escaped if
it is a regular param, but they are not escaped if it is a glob param

fixes FOO-2978

Change-Id: Id41030590a5a2a6cfb255168b737d7a2e3aedbef
Reviewed-on: https://gerrit.instructure.com/c/canvas-lms/+/294580
Reviewed-by: Alex Slaughter <11669a22a05ead38ed9badafd55ef4c5386724b6@instructure.com>
Tested-by: Service Cloud Jenkins <9144042a601061f88f1e1d7a1753ea3e2972119d@instructure.com>
QA-Review: Jacob Burroughs <8ecea6e385af5cf9f53123f5ca17fb5fd6a6d4b2@instructure.com>
Product-Review: Jacob Burroughs <8ecea6e385af5cf9f53123f5ca17fb5fd6a6d4b2@instructure.com>

sfu/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,sfu/canvas-lms