Fixes #3396: Enable the APT installation Technique/PT to install untrusted packages in some cases
Merge pull request #80 from Kegeruneku/bug_3396/dev/3396_allow_apt_installation_pt_to_use_untrusted_packages

Fixes #3396: Enable the APT installation Technique/PT to install untrust...
Merge branch 'branches/rudder/2.3' into branches/rudder/2.4
Fixes #3396: Enable the APT installation Technique/PT to install untrust(...), transform to technique