Reinstall Lizard's isobuilders from scratch

As noted in #10772-note_8, our isobuilders have slight differences that may explain why we see sometimes different behaviors. When we’ll port our build system to Jessie, we then should reinstall then from scratch rather than simply upgrade them, to get a more deterministic behavior.

Parent Task: #12160 (closed)

Related issues

Blocked by #9262 (closed)

Original created by @bertagaz on 11006 (Redmine)

Edited Nov 22, 2019 by intrigeri

To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information