Re-add icinga, it appears to exist after all.

jsha · jsha · commit f6370fe8c69e · 2015-03-05T22:48:23.000-08:00
diff --git a/src/chrome/content/rules/Wikimedia.xml b/src/chrome/content/rules/Wikimedia.xml
@@ -108,6 +108,7 @@
 
 	<!-- Wikimedia Tool Labs -->
 	<target host="tools.wmflabs.org" />
+	<target host="icinga.wmflabs.org" />
 	<target host="ganglia.wmflabs.org" />
 
 	<!--	Not secured by server:
