Check the confirmation option in wipe-mailbox

roles/queue/files/wipe-mailbox.sh

@@ -28,6 +28,11 @@ if [ -z "${mailbox}" ]; then
     exit 2
 fi
 
+if [ $confirm -ne 1 ]; then
+    echo "You did not pass the confirmation option --yes-i-am-sure!" >&2
+    exit 1
+fi
+
 set -euo pipefail
 
 # Get the list of mailboxes in an array.