don't call TimeWithZone directly
don't call TimeWithZone directly

rails docs discourage the use of ActiveSupport::TimeWithZone.new

Change-Id: I6310ea3a5d29fd1dabd9f0be7a3385564cf011d3
Reviewed-on: https://gerrit.instructure.com/4126
Reviewed-by: JT Olds <0857133ffcd232122dc51ad55bf5fcc9d60af5d3@instructure.com>
Tested-by: Hudson <dfb64870173313a9a7b56f814c8e3b33e268497a@instructure.com>

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