Filter out None scopes, to avoid trouble later.
Filter out None scopes, to avoid trouble later.

I'm not sure why we have tasks with no set scope, but we've seen
this with custom tasks at Foursqare. Will figure that out later.

Testing Done:
Running ci.

Reviewed at https://rbcommons.com/s/twitter/r/1125/

lahosken/pants,tejal29/pants,dgomez10/xanon,lahosken/pants,sid-kap/pants,peiyuwang/pants,foursquare/pants,kslundberg/pants,ericzundel/pants,UnrememberMe/pants,landism/pants,mateor/pants,baroquebobcat/pants,landism/pants,jessrosenfield/pants,lahosken/pants,jessrosenfield/pants,peiyuwang/pants,digwanderlust/pants,megaserg/pants,sameerparekh/pants,megaserg/pants,foursquare/pants,scode/pants,jessrosenfield/pants,qma/pants,benjyw/pants,square/pants,ericzundel/pants,lahosken/pants,laurentgo/pants,tdyas/pants,digwanderlust/pants,fkorotkov/pants,digwanderlust/pants,UnrememberMe/pants,gmalmquist/pants,jtrobec/pants,dturner-tw/pants,jessrosenfield/pants,mateor/pants,dturner-tw/pants,digwanderlust/pants,cevaris/pants,qma/pants,15Dkatz/pants,sameerparekh/pants,dgomez10/xanon,dbentley/pants,sid-kap/pants,laurentgo/pants,peiyuwang/pants,twitter/pants,gmalmquist/pants,twitter/pants,qma/pants,dturner-tw/pants,sid-kap/pants,areitz/pants,baroquebobcat/pants,cevaris/pants,ericzundel/pants,baroquebobcat/pants,dbentley/pants,scode/pants,twitter/pants,di0spyr0s/pants,pantsbuild/pants,pgroudas/pants,foursquare/pants,jessrosenfield/pants,dgomez10/xanon,twitter/pants,kwlzn/pants,baroquebobcat/pants,Gabriel439/pants,dgomez10/xanon,twitter/pants,jtrobec/pants,wisechengyi/pants,sid-kap/pants,fkorotkov/pants,peiyuwang/pants,dgomez10/xanon,dgomez10/xanon,baroquebobcat/pants,Gabriel439/pants,manasapte/pants,ity/pants,digwanderlust/pants,pgroudas/pants,UnrememberMe/pants,benjyw/pants,di0spyr0s/pants,jsirois/pants,UnrememberMe/pants,megaserg/pants,fkorotkov/pants,jtrobec/pants,landism/pants,pgroudas/pants,kwlzn/pants,dturner-tw/pants,areitz/pants,megaserg/pants,kwlzn/pants,landism/pants,lahosken/pants,twitter/pants,dbentley/pants,square/pants,areitz/pants,wisechengyi/pants,Gabriel439/pants,sameerparekh/pants,ericzundel/pants,TansyArron/pants,kslundberg/pants,manasapte/pants,slyphon/pants,laurentgo/pants,tdyas/pants,lahosken/pants,jsirois/pants,peiyuwang/pants,pantsbuild/pants,pombredanne/pants,15Dkatz/pants,pantsbuild/pants,benjyw/pants,jessrosenfield/pants,UnrememberMe/pants,manasapte/pants,baroquebobcat/pants,ity/pants,TansyArron/pants,15Dkatz/pants,dbentley/pants,15Dkatz/pants,sameerparekh/pants,mateor/pants,ericzundel/pants,baroquebobcat/pants,scode/pants,manasapte/pants,fkorotkov/pants,pombredanne/pants,megaserg/pants,wisechengyi/pants,tejal29/pants,dgomez10/xanon,kwlzn/pants,slyphon/pants,slyphon/pants,twitter/pants,gmalmquist/pants,slyphon/pants,tejal29/pants,mateor/pants,areitz/pants,slyphon/pants,kwlzn/pants,laurentgo/pants,pombredanne/pants,areitz/pants,square/pants,scode/pants,cevaris/pants,sameerparekh/pants,ity/pants,ity/pants,qma/pants,pombredanne/pants,dbentley/pants,mateor/pants,TansyArron/pants,foursquare/pants,dbentley/pants,jtrobec/pants,dturner-tw/pants,pantsbuild/pants,qma/pants,tdyas/pants,ericzundel/pants,pombredanne/pants,Gabriel439/pants,peiyuwang/pants,tdyas/pants,di0spyr0s/pants,foursquare/pants,benjyw/pants,foursquare/pants,scode/pants,cevaris/pants,manasapte/pants,tejal29/pants,scode/pants,Gabriel439/pants,sid-kap/pants,pgroudas/pants,slyphon/pants,dgomez10/xanon,gmalmquist/pants,tdyas/pants,TansyArron/pants,cevaris/pants,cevaris/pants,manasapte/pants,15Dkatz/pants,dgomez10/xanon,pantsbuild/pants,landism/pants,wisechengyi/pants,sid-kap/pants,fkorotkov/pants,di0spyr0s/pants,jsirois/pants,twitter/pants,dturner-tw/pants,kslundberg/pants,tejal29/pants,sid-kap/pants,pantsbuild/pants,kslundberg/pants,kslundberg/pants,fkorotkov/pants,kslundberg/pants,megaserg/pants,manasapte/pants,pgroudas/pants,dgomez10/xanon,tdyas/pants,TansyArron/pants,pgroudas/pants,sameerparekh/pants,peiyuwang/pants,baroquebobcat/pants,Gabriel439/pants,15Dkatz/pants,jtrobec/pants,di0spyr0s/pants,benjyw/pants,UnrememberMe/pants,15Dkatz/pants,UnrememberMe/pants,landism/pants,ericzundel/pants,landism/pants,Gabriel439/pants,pantsbuild/pants,tdyas/pants,gmalmquist/pants,benjyw/pants,megaserg/pants,kslundberg/pants,landism/pants,foursquare/pants,UnrememberMe/pants,sameerparekh/pants,ericzundel/pants,UnrememberMe/pants,gmalmquist/pants,ity/pants,pombredanne/pants,TansyArron/pants,jtrobec/pants,jessrosenfield/pants,square/pants,laurentgo/pants,di0spyr0s/pants,peiyuwang/pants,laurentgo/pants,wisechengyi/pants,dgomez10/xanon,slyphon/pants,dturner-tw/pants,cevaris/pants,benjyw/pants,tdyas/pants,gmalmquist/pants,15Dkatz/pants,kwlzn/pants,scode/pants,areitz/pants,dbentley/pants,di0spyr0s/pants,qma/pants,jtrobec/pants,wisechengyi/pants,mateor/pants,kwlzn/pants,digwanderlust/pants,ity/pants,foursquare/pants,areitz/pants,pombredanne/pants,lahosken/pants,wisechengyi/pants,twitter/pants,fkorotkov/pants,foursquare/pants,fkorotkov/pants,wisechengyi/pants,mateor/pants,wisechengyi/pants,baroquebobcat/pants,mateor/pants,TansyArron/pants,qma/pants,lahosken/pants,ity/pants,tdyas/pants