update boot.rb for the newest brightbox 1.9 packages and ruby 2.0
update boot.rb for the newest brightbox 1.9 packages and ruby 2.0

This doesn't add full ruby 2.0 compatibility, just fixes one bootup
issue. Brightbox backported a similar gem/require change to their latest
1.9 package, this fixes the same error with that package as well.

Change-Id: If2905f1f9fa0eb145efa1caefcf005b5f991f785
Reviewed-on: https://gerrit.instructure.com/18085
Reviewed-by: Stanley Stuart <2b43fb8b7a234825d50dd49ce7892d78a59da8f3@instructure.com>
QA-Review: Stanley Stuart <2b43fb8b7a234825d50dd49ce7892d78a59da8f3@instructure.com>
Tested-by: Jenkins <d95b56ce41a2e1ac4cecdd398defd7414407cc08@instructure.com>

merichar/canvas-lms,shidao-fm/canvas-lms,fronteerio/canvas-lms,djbender/canvas-lms,sdeleon28/canvas-lms,efrj/canvas-lms,whalejasmine/canvas-lms,va7map/canvas-lms,sdeleon28/canvas-lms,juoni/canvas-lms,utkarshx/canvas-lms,merichar/canvas-lms,samuels410/greatlakes-lms,roxolan/canvas-lms,sfu/canvas-lms,arrivu/jigsaw-lms,jay3126/canvas-lms,leftplusrightllc/canvas-lms,va7map/canvas-lms,arrivu/arrivu-lms,va7map/canvas-lms,antoniuslin/canvas-lms,usmschuck/canvas,Unow/ins,sfu/canvas-lms,Unow/ins,HotChalk/canvas-lms,landonwilkins/canvas-lms,wimemx/Canvas,loganrun/pincan,utkarshx/canvas-lms,tgroshon/canvas-lms,shidao-fm/canvas-lms,whalejasmine/canvas-lms,arrivu/qibla-ecampus,sfu/canvas-lms,HotChalk/canvas-lms,jay3126/canvas-lms,wye0220/shindig-canvas,skmezanul/canvas-lms,sli7246/canvas_branch,antoniuslin/canvas-lms,antoniuslin/canvas-lms,arrivu/hoodemo,whalejasmine/canvas-lms,djbender/canvas-lms,djbender/canvas-lms,antoniuslin/canvas-lms,Unow/canvas-lms,SwinburneOnline/canvas-lms,sfu/canvas-lms,rup/Tarrax,sli7246/canvas_branch,grahamb/canvas-lms,Jyaasa/canvas-lms,jay3126/canvas-lms,Unow/canvas-lms,juoni/canvas-lms,greyhwndz/canvas-lms,shidao-fm/canvas-lms,grahamb/canvas-lms,arrivu/jigsaw-lms,juoni/canvas-lms,venturehive/canvas-lms,rup/Tarrax,sdeleon28/canvas-lms,leftplusrightllc/canvas-lms,wye0220/shindig-canvas,kyroskoh/canvas-lms,usmschuck/canvas,SwinburneOnline/canvas-lms,HotChalk/canvas-lms,SwinburneOnline/canvas-lms,ShreniiNepal/shrenii_lmp,redconfetti/canvas-lms,roxolan/canvas-lms,sfu/canvas-lms,SwinburneOnline/canvas-lms,ShreniiNepal/shrenii_lmp,loganrun/pincan,redconfetti/canvas-lms,landonwilkins/canvas-lms,tgroshon/canvas-lms,Jyaasa/canvas-lms,kyroskoh/canvas-lms,leftplusrightllc/canvas-lms,kyroskoh/canvas-lms,arrivu/hoodemo,leftplusrightllc/canvas-lms,greyhwndz/canvas-lms,wrdsb/canvas-lms,ShreniiNepal/shrenii_lmp,grahamb/canvas-lms,arrivu/qibla-ecampus,Jyaasa/canvas-lms,arrivu/hoodemo,roxolan/canvas-lms,efrj/canvas-lms,shidao-fm/canvas-lms,skmezanul/canvas-lms,sfu/canvas-lms,merichar/canvas-lms,redconfetti/canvas-lms,Unow/ins,arrivu/arrivu-lms,HotChalk/canvas-lms,landonwilkins/canvas-lms,Jyaasa/canvas-lms,samuels410/greatlakes-lms,Rvor/canvas-lms,whalejasmine/canvas-lms,skmezanul/canvas-lms,roxolan/canvas-lms,rup/Tarrax,venturehive/canvas-lms,venturehive/canvas-lms,redconfetti/canvas-lms,wrdsb/canvas-lms,sfu/canvas-lms,wimemx/Canvas,arrivu/qibla-ecampus,arrivu/jigsaw-lms,kyroskoh/canvas-lms,utkarshx/canvas-lms,Rvor/canvas-lms,greyhwndz/canvas-lms,fronteerio/canvas-lms,loganrun/pincan,Rvor/canvas-lms,skmezanul/canvas-lms,jay3126/canvas-lms,tgroshon/canvas-lms,utkarshx/canvas-lms,samuels410/greatlakes-lms,sdeleon28/canvas-lms,juoni/canvas-lms,venturehive/canvas-lms,wrdsb/canvas-lms,greyhwndz/canvas-lms,grahamb/canvas-lms,wrdsb/canvas-lms,ShreniiNepal/shrenii_lmp,arrivu/arrivu-lms,wimemx/Canvas,efrj/canvas-lms,tgroshon/canvas-lms,Unow/canvas-lms,landonwilkins/canvas-lms,usmschuck/canvas,wye0220/shindig-canvas,fronteerio/canvas-lms,sli7246/canvas_branch,Rvor/canvas-lms,efrj/canvas-lms,djbender/canvas-lms,fronteerio/canvas-lms,samuels410/greatlakes-lms,usmschuck/canvas,grahamb/canvas-lms,va7map/canvas-lms