Make sure cube script works in all locale envs

examples/kvm-qemu/cube-backup.sh

@@ -1,6 +1,6 @@
 #!/usr/bin/env bash
 
-# Script ver 2025022301
+# Script ver 2025042801
 
 #TODO: blockcommit removes current snapshots, even if not done by cube
 #      - it's interesting to make housekeeping, let's make this an option
@@ -26,6 +26,9 @@ SNAPSHOT_FAILED_FILE="${ROOT_DIR}/SNAPSHOT_FAILED"
 # default tenant if extraction of tenant name failed
 DEFAULT_TENANT=netperfect
 
+# Force libvirt to talk in parseable english
+export LANG=C
+
 SCRIPT_ERROR=false
 
 function log {