Use an alternative to reprepro

[ppp0]

Until reprepro does not support the inclusion of several versions of the same package in its database (there is a patch to allow for this), move our package database creation to either

• https://www.aptly.info - probably deserves the distinction swiss army knife
• https://github.com/rcrowley/freight (Description in Debian packaging for busy people)

[njam]

Not needed