Move TURN port to a different range

It landed on a port used by PostgreSQL. Also switch STUN/TURN to TCP
because HAProxy does not support UDP.

Closes #240

site-cookbooks/kosmos-ejabberd/recipes/default.rb

@@ -205,13 +205,13 @@ unless node.chef_environment == "development"
 
   firewall_rule 'ejabberd_stun_turn' do
     port     3478
-    protocol :udp
+    protocol :tcp
     command  :allow
   end
 
   firewall_rule 'ejabberd_turn' do
     port     node["kosmos-ejabberd"]["turn_min_port"]..node["kosmos-ejabberd"]["turn_max_port"]
-    protocol :udp
+    protocol :tcp
     command  :allow
   end
 end