fixed rm command, edit days of keeped backup

-> rm command: {} contains already the full path for deletion
-> days to keep: local nas script delets files which are older than 30
days.. cause of this rsync keeps syncing old files everyday

lxc_backup.sh

@@ -27,8 +27,8 @@ do
 	${lxccmd} delete ${container}-backup
 done
 
-#housekeeping - keep last 38 days
-find ${backuppath} -mtime +38 -exec rm -f ${backuppath}/{} \;
+#housekeeping - keep last 28 days
+find ${backuppath} -mtime +28 -exec rm -f {} \;
 
 #own data for backupuser
 chown -R ${backupuser}:${backupuser} ${backuppath}