Issue #2868384 by RoSk0, poker10, tuutti, rgeerolf, sokru, jofitz, pooja...

Issue #2868384 by RoSk0, poker10, tuutti, rgeerolf, sokru, jofitz, pooja saraah, cilefen, catch, ThomWilhelm, larowlan, quietone: Allow the session name suffix to be configurable

(cherry picked from commit 9b56e161)
(cherry picked from commit c6573cf0)