fix adobe connect conferences
fix adobe connect conferences

fixes CNVS-10092

test plan:
  * create a new adobe connect conference;
  * start the conference;
  * reload the conferences page in canvas and verify
    that it loads without an error.

Change-Id: Iba63fe121138295e589f8f099c8f27cb4d06c9b7
Reviewed-on: https://gerrit.instructure.com/27720
Tested-by: Jenkins <jenkins@instructure.com>
Reviewed-by: Braden Anderson <banderson@instructure.com>
QA-Review: Steven Shepherd <sshepherd@instructure.com>
Product-Review: Zach Pendleton <zachp@instructure.com>

Conflicts:
	Gemfile

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