PDK does not sign APT repository put on CD

[obbardc]

The pdk repogen command signs the created repository using GPG. All good.

The pdk mediagen command (when creating a Debian ISO) does not sign the repository which is copied onto the CD using GPG. This is preventing the installer from installing, unless a flag is set in the preseed file.

The workaround for this is to put the following into a preseed file:-

d-i debian-installer/allow_unauthenticated boolean true