Save settings before upgrading

scripts/upgrade

@@ -18,10 +18,20 @@ else
   firmware_nonfree=no
 fi
 
+tmpdir=$(mktemp -dp /tmp/ hotspot-upgrade-XXXXX)
+sudo cp -a /etc/yunohost/apps/hotspot/settings.yml "${tmpdir}/"
+
 export HOTSPOT_UPGRADE=1
 sudo bash /etc/yunohost/apps/hotspot/scripts/remove &> /dev/null
 bash ./install "${domain}" "${path}" "${wifi_ssid}" "${wifi_passphrase}" "${firmware_nonfree}"
 
+gitcommit=$(ynh_setting hotspot gitcommit)
+
+sudo cp -a "${tmpdir}/settings.yml" /etc/yunohost/apps/hotspot/
+sudo rm -r "${tmpdir}/"
+
+sudo yunohost app setting hotspot gitcommit -v "${gitcommit}"
+
 # Changes
 
 if [ "$(ynh_setting hotspot ip6_firewall)" == '' ]; then