filter bogus snapshot data
filter bogus snapshot data

test plan:
 * set your clock to the future
 * run CountsReport
 * set your clock to the present
 * ensure graphs on the statistics page don't take the future into
   account

Change-Id: Ibcd0403fdd504a6a646e4a84b45203d98469bda9
Reviewed-on: https://gerrit.instructure.com/11127
Tested-by: Jenkins <d95b56ce41a2e1ac4cecdd398defd7414407cc08@instructure.com>
Reviewed-by: Jeremy Stanley <b3f594e10a9edcf5413cf1190121d45078c62290@instructure.com>

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