Add script to delete a poudriere jail.

ansible/roles/poudriere/files/poudriere_delete_jail.bash

@@ -0,0 +1,16 @@
+#!/usr/bin/env bash
+#
+set -euo pipefail
+IFS=$'\n\t'
+DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+
+jail_name="$1"
+
+jail_list=$(poudriere jail -l -n -q)
+if ! grep -q "${jail_name}" <<<"$jail_list"; then
+    die "No jail named ${jail_name} found."
+fi
+
+poudriere jail -d -j "$jail_name" -C all
+
+echo "Deleted jail $jail_name"