provide anonymous_submissions flag in assignments api, closes #4392
provide anonymous_submissions flag in assignments api, closes #4392

Change-Id: I2ca239fc7bea827141270c2ced4f48bc888638ae
Reviewed-on: https://gerrit.instructure.com/3480
Reviewed-by: Zach Wily <9de8c4480303b5335cd2a33eefe814615ba3612a@instructure.com>
Tested-by: Hudson <dfb64870173313a9a7b56f814c8e3b33e268497a@instructure.com>

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