Adding tools for next version of warden.

Change-Id: I35b0ac57b54b0bf7b8c6b6a40e02f050b3fcc7f1
diff --git a/utils/warden/bin/destroy-cell b/utils/warden/bin/destroy-cell
new file mode 100755
index 0000000..c39d5fe
--- /dev/null
+++ b/utils/warden/bin/destroy-cell
@@ -0,0 +1,12 @@
+#!/bin/bash
+# Destroys an LXC cell with the specified name.
+
+name=$1
+
+cd $(dirname $0)
+
+./destroy-node $name-mn
+
+for n in {1..3}; do
+    ./destroy-node $name-$n
+done