remove immediate dependence of email template generation on domain.yml
remove immediate dependence of email template generation on domain.yml

not sure why i didn't do it this way before. i'm dumb. closes #3710

Change-Id: I93d5d5e600baae247a149b4a87dbfbcc0395b44c
Reviewed-on: https://gerrit.instructure.com/2165
Tested-by: Hudson <dfb64870173313a9a7b56f814c8e3b33e268497a@instructure.com>
Reviewed-by: Brian Whitmer <760e7dab2836853c63805033e514668301fa9c47@instructure.com>

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