Re-open port 80 on firehose.openstack.org

With our attempts to re-enable websockets on mosquitto we need to open
up port 80 again so we can connect via websockets. This commit does
that.

Change-Id: Id9bb77ef9a2ac70eec74db4ea64423b5d6351a06

manifests/site.pp

@@ -535,7 +535,7 @@ node /^firehose\d+\.openstack\.org$/ {
     # NOTE(mtreinish) Port 80 and 8080 are disabled because websocket
     # connections seem to crash mosquitto. Once this is fixed we should add
     # them back
-    iptables_public_tcp_ports => [22, 25, 1883, 8883],
+    iptables_public_tcp_ports => [22, 25, 80, 1883, 8883],
     sysadmins                 => hiera('sysadmins', []),
     manage_exim               => false,
   }