feat(prosody): Enables connection resumption for jicofo and jvb.

doc/debian/jitsi-meet-prosody/prosody.cfg.lua-jvb.example

 VirtualHost "auth.jitmeet.example.com"
     modules_enabled = {
         "limits_exception";
+        "smacks";
     }
     authentication = "internal_hashed"
+    smacks_hibernation_time = 15;
 
 -- Proxy to jicofo's user JID, so that it doesn't have to register as a component.
 Component "focus.jitmeet.example.com" "client_proxy"

resources/extra-large-conference/prosody.cfg.lua.visitor.template

     modules_enabled = {
           'limits_exception';
           'ping';
+          'smacks';
     }
     authentication = 'internal_hashed'
+    smacks_hibernation_time = 15;
 
 Component 'conference.vX.meet.jitsi' 'muc'
     storage = 'memory'