health-check: include a wg-home check

scripts/health-check

@@ -1,5 +1,5 @@
 #!/usr/bin/env nix-shell
-#!nix-shell -i bash -p curl -p dig
+#!nix-shell -i bash -p curl -p dig -p iputils
 set -eu
 
 echo "this script will check that uninsane.org is baseline operational"
@@ -18,6 +18,8 @@ curl --silent --fail-with-body https://fed.uninsane.org > /dev/null || echo "htt
 
 nslookup -querytype=TXT _dmarc.uninsane.org. > /dev/null || echo "missing DMARC record for uninsane.org"
 
+ping -c 1 -W 3 servo-hn  >/dev/null || echo "servo-hn not pingable"
+
 set +x
 echo ""
 echo "SUCCESS"