The Web UI for custom channel details must support setting the preferred checksum method for particular custom channel.
UI changes for custom channel management implemented in 8785a5333c28eec1224c2f65cb1bc651ed759e21 and 04b69dbe397a216a82b22776303773e87597f1dd.
On DEV.
Verified on webdev Testopia ID: https://testopia.devel.redhat.com/bugzilla/tr_show_case.cgi?case_id=12600