Installer: [FIX] missing path for testing get_distro
Installer: [FIX] missing path for testing get_distro

We had one test for get_distro that was supposed to not find
anything. This "not finding" did not succeed since it checked for the
distro of the system where the test is executed. Added a path
description that permits this.

tapper/Tapper-Installer,tapper/Tapper-Installer