Add common module managing common services and scripts (act_runner, create/restore backups)

Fix script environment variables
Add Fefan configuration
Fix gateway services file provisionning through ssh

modules/apps/common/services/docker/create-backup.service

@@ -0,0 +1,9 @@
+[Unit]
+Description=Backup Service
+Wants=network.target
+After=network.target docker.service
+
+[Service]
+Type=oneshot
+User=root
+ExecStart=/usr/local/bin/backup.sh

modules/apps/common/services/docker/restore-backup.service

@@ -0,0 +1,9 @@
+[Unit]
+Description=Restore latest backup
+After=network.target
+Requires=docker.service
+
+[Service]
+Type=oneshot
+User=root
+ExecStart=/usr/local/bin/restore-backup.sh