spec: fix intermittently failing gradebook2 selenium spec
spec: fix intermittently failing gradebook2 selenium spec

Change-Id: Idfb56005437a13386865203d9c03337ba3bc1b89
Reviewed-on: https://gerrit.instructure.com/9413
Tested-by: Hudson <dfb64870173313a9a7b56f814c8e3b33e268497a@instructure.com>
Reviewed-by: Bryan Madsen <0a3ba1af216659500dd8f41e29f3979f42452870@instructure.com>

jay3126/canvas-lms,arrivu/arrivu-lms,em2/canvas-lms,instructure/canvas-lms,whalejasmine/canvas-lms,utkarshx/canvas-lms,SwinburneOnline/canvas-lms,AndranikMarkosyan/lms,Jyaasa/canvas-lms,antoniuslin/canvas-lms,greyhwndz/canvas-lms,leftplusrightllc/canvas-lms,narigone/canvas,samuels410/greatlakes-lms,whalejasmine/canvas-lms,wye0220/shindig-canvas,nditech/red-innovadores-lms,tgroshon/canvas-lms,wimemx/Canvas,usmschuck/canvas,Jyaasa/canvas-lms,usmschuck/canvas,Rvor/canvas-lms,grahamb/canvas-lms,greyhwndz/canvas-lms,arrivu/hoodemo,wimemx/Canvas,loganrun/pincan,jay3126/canvas-lms,snehakachroo1/LSI_replica,tgroshon/canvas-lms,roxolan/canvas-lms,sfu/canvas-lms,samuels410/greatlakes-lms,va7map/canvas-lms,arrivu/arrivu-lms,wye0220/shindig-canvas,rup/Tarrax,grahamb/canvas-lms,ankithbti/canvas_lms,merichar/canvas-lms,AndranikMarkosyan/lms,arrivu/hiring-site,juoni/canvas-lms,juoni/canvas-lms,antoniuslin/canvas-lms,arrivu/qibla-ecampus,ShreniiNepal/shrenii_lmp,shidao-fm/canvas-lms,va7map/canvas-lms,arrivu/arrivu-lms,instructure/canvas-lms,icelab/canvas,roxolan/canvas-lms,gbleydon/canvas-lms,redconfetti/canvas-lms,redconfetti/canvas-lms,em2/canvas-lms,arrivu/hoodemo,leftplusrightllc/canvas-lms,arrivu/jigsaw-lms,wrdsb/canvas-lms,wrdsb/canvas-lms,usmschuck/canvas,dgynn/canvas-lms,Unow/canvas-lms,SwinburneOnline/canvas-lms,va7map/canvas-lms,jay3126/canvas-lms,usmschuck/canvas,sdeleon28/canvas-lms,kyroskoh/canvas-lms,Unow/canvas-lms,ShreniiNepal/shrenii_lmp,kyroskoh/canvas-lms,parbros/red-innovadores-lms,sfu/canvas-lms,SwinburneOnline/canvas-lms,arrivu/jigsaw-lms,snehakachroo1/LSI_replica,narigone/canvas,wrdsb/canvas-lms,nditech/red-innovadores-lms,matematikk-mooc/canvas-lms,redconfetti/canvas-lms,ShreniiNepal/shrenii_lmp,landonwilkins/canvas-lms,instructure/canvas-lms,sfu/canvas-lms,instructure/canvas-lms,HotChalk/canvas-lms,utkarshx/canvas-lms,landonwilkins/canvas-lms,Jyaasa/canvas-lms,grahamb/canvas-lms,sli7246/canvas_branch,Rvor/canvas-lms,djbender/canvas-lms,matematikk-mooc/canvas-lms,gbleydon/canvas-lms,snehakachroo1/LSI_replica,instructure/canvas-lms,sfu/canvas-lms,efrj/canvas-lms,Jyaasa/canvas-lms,djbender/canvas-lms,Unow/canvas-lms,narigone/canvas,Rvor/canvas-lms,djbender/canvas-lms,parbros/red-innovadores-lms,landonwilkins/canvas-lms,tgroshon/canvas-lms,HotChalk/canvas-lms,wimemx/Canvas,tgroshon/canvas-lms,venturehive/canvas-lms,dgynn/canvas-lms,leftplusrightllc/canvas-lms,shidao-fm/canvas-lms,utkarshx/canvas-lms,greyhwndz/canvas-lms,leftplusrightllc/canvas-lms,icelab/canvas,roxolan/canvas-lms,arrivu/hiring-site,ShreniiNepal/shrenii_lmp,AndranikMarkosyan/lms,antoniuslin/canvas-lms,fronteerio/canvas-lms,Unow/ins,arrivu/qibla-ecampus,landonwilkins/canvas-lms,skmezanul/canvas-lms,whalejasmine/canvas-lms,dgynn/canvas-lms,matematikk-mooc/canvas-lms,instructure/canvas-lms,ankithbti/canvas_lms,efrj/canvas-lms,greyhwndz/canvas-lms,antoniuslin/canvas-lms,redconfetti/canvas-lms,Rvor/canvas-lms,sfu/canvas-lms,grahamb/canvas-lms,ankithbti/canvas_lms,sfu/canvas-lms,skmezanul/canvas-lms,merichar/canvas-lms,djbender/canvas-lms,icelab/canvas,gbleydon/canvas-lms,eCNAP/CANVAS,eCNAP/CANVAS,arrivu/hoodemo,arrivu/hiring-site,juoni/canvas-lms,fronteerio/canvas-lms,kyroskoh/canvas-lms,wye0220/shindig-canvas,fronteerio/canvas-lms,sdeleon28/canvas-lms,skmezanul/canvas-lms,arrivu/jigsaw-lms,roxolan/canvas-lms,sli7246/canvas_branch,narigone/canvas,rup/Tarrax,jay3126/canvas-lms,efrj/canvas-lms,instructure/canvas-lms,AndranikMarkosyan/lms,va7map/canvas-lms,samuels410/greatlakes-lms,sli7246/canvas_branch,venturehive/canvas-lms,venturehive/canvas-lms,dgynn/canvas-lms,HotChalk/canvas-lms,parbros/red-innovadores-lms,fronteerio/canvas-lms,shidao-fm/canvas-lms,sdeleon28/canvas-lms,merichar/canvas-lms,efrj/canvas-lms,arrivu/qibla-ecampus,HotChalk/canvas-lms,snehakachroo1/LSI_replica,matematikk-mooc/canvas-lms,nditech/red-innovadores-lms,eCNAP/CANVAS,em2/canvas-lms,eCNAP/CANVAS,kyroskoh/canvas-lms,wrdsb/canvas-lms,venturehive/canvas-lms,loganrun/pincan,rup/Tarrax,juoni/canvas-lms,utkarshx/canvas-lms,samuels410/greatlakes-lms,Unow/ins,loganrun/pincan,sfu/canvas-lms,nditech/red-innovadores-lms,shidao-fm/canvas-lms,skmezanul/canvas-lms,SwinburneOnline/canvas-lms,Unow/ins,whalejasmine/canvas-lms,grahamb/canvas-lms,sdeleon28/canvas-lms