Add flite install script for linux and integrate it in provisioning
for openSuSE Leap 15.3.
Change-Id: Ie99271b115ba5c7b1f0177e09f38a4729de2b6cd
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
(cherry picked from commit 171a3e85f7)
Reviewed-by: Qt Cherry-pick Bot <cherrypick_bot@qt-project.org>
