The thing is that there is no notification created at all for updating custom-info under 
Content --> Subscription --> subscription-manger-applications --> distributor--> details --> custom information

Also felt like using the common/save-cancel function here too, hence modified it and made it optional so that whichever functionality does not create notification doesn't fail due to notifications timeout.

Tests related to systems, users ----->  would continue to use the match-pred
Tests related to custom-info   ------>  would not 

Hence made match-pred optional for the common/save-cancel.