Daemon - kill comms thread first

With the current code base, the order doesn't appear to change behaviour except on the Linux CI tests  in which case this order stops the build servers from hanging.

Author: samaaron

app/server/ruby/bin/daemon.rb

@@ -613,8 +613,8 @@ def process_running?
 
       def kill
         @pid = @tau_pid.get
-        super
         @tau_comms_thread.kill
+        super
       end
 
       def wait