glob for web pack bundles
glob for web pack bundles

refs CNVS-25916

newly added bundles are being missed.
Look for bundles in "app/coffeescripts/bundles"
and reject those which are not entry points.

TEST PLAN:
  1) specs should pass
  2) web pack selenium build should have less failures

Change-Id: I7562e4f6124a78b62cdd59151067ce31ac65e164
Reviewed-on: https://gerrit.instructure.com/69311
Reviewed-by: Simon Williams <088e16a1019277b15d58faf0541e11910eb756f6@instructure.com>
Tested-by: Jenkins
Product-Review: Ethan Vizitei <73eeb0b2f65d05a906adf3b21ee1f9f5a2aa3c1c@instructure.com>
QA-Review: Ethan Vizitei <73eeb0b2f65d05a906adf3b21ee1f9f5a2aa3c1c@instructure.com>

matematikk-mooc/canvas-lms,venturehive/canvas-lms,sfu/canvas-lms,djbender/canvas-lms,instructure/canvas-lms,instructure/canvas-lms,redconfetti/canvas-lms,grahamb/canvas-lms,dgynn/canvas-lms,roxolan/canvas-lms,djbender/canvas-lms,venturehive/canvas-lms,fronteerio/canvas-lms,fronteerio/canvas-lms,redconfetti/canvas-lms,sfu/canvas-lms,HotChalk/canvas-lms,HotChalk/canvas-lms,sfu/canvas-lms,SwinburneOnline/canvas-lms,dgynn/canvas-lms,HotChalk/canvas-lms,roxolan/canvas-lms,venturehive/canvas-lms,SwinburneOnline/canvas-lms,grahamb/canvas-lms,HotChalk/canvas-lms,roxolan/canvas-lms,redconfetti/canvas-lms,instructure/canvas-lms,instructure/canvas-lms,matematikk-mooc/canvas-lms,grahamb/canvas-lms,grahamb/canvas-lms,redconfetti/canvas-lms,matematikk-mooc/canvas-lms,sfu/canvas-lms,dgynn/canvas-lms,instructure/canvas-lms,dgynn/canvas-lms,matematikk-mooc/canvas-lms,SwinburneOnline/canvas-lms,instructure/canvas-lms,instructure/canvas-lms,sfu/canvas-lms,sfu/canvas-lms,fronteerio/canvas-lms,venturehive/canvas-lms,djbender/canvas-lms,grahamb/canvas-lms,roxolan/canvas-lms,djbender/canvas-lms,fronteerio/canvas-lms,sfu/canvas-lms,SwinburneOnline/canvas-lms