lfw roc: Make sure every representation exists.
lfw roc: Make sure every representation exists.

sahilshah/openface,sumsuddinshojib/openface,sumsuddinshojib/openface,nhzandi/openface,nmabhi/Webface,sumsuddinshojib/openface,nhzandi/openface,francisleunggie/openface,xinfang/face-recognize,cmusatyalab/openface,Alexx-G/openface,Alexx-G/openface,Alexx-G/openface,cmusatyalab/openface,nhzandi/openface,sumsuddinshojib/openface,xinfang/face-recognize,xinfang/face-recognize,cmusatyalab/openface,sahilshah/openface,sahilshah/openface,nmabhi/Webface,Alexx-G/openface,nmabhi/Webface,sahilshah/openface,francisleunggie/openface,francisleunggie/openface,nmabhi/Webface