The autoupdater-fallback-package is used to recover nodes that have lost
their uplink. If the loss of uplink is caused by a new configuration
(e.g. changed mesh-config) a recovery as WiFi client can be useful.
This change adds a fork of the Freifunk Hochstift
autoupdater-fallback-package and ports it forward to Gluon v2018.2.
Signed-off-by: Chrissi^ <firstname.lastname@example.org>