ref: Make is_healthcheck_room more generic.

resources/prosody-plugins/mod_muc_allowners.lua

 module:hook("muc-occupant-joined", function (event)
     local room, occupant = event.room, event.occupant;
 
-    if is_healthcheck_room(room) then
+    if is_healthcheck_room(room.jid) then
         return;
     end
 
 module:hook("muc-occupant-left", function (event)
     local room, occupant = event.room, event.occupant;
 
-    if is_healthcheck_room(room) then
+    if is_healthcheck_room(room.jid) then
         return;
     end
 

resources/prosody-plugins/mod_muc_lobby_rooms.lua

     host_module:hook('muc-occupant-pre-join', function (event)
         local room, stanza = event.room, event.stanza;
 
-        if is_healthcheck_room(room) then
+        if is_healthcheck_room(room.jid) then
             return;
         end
 

resources/prosody-plugins/mod_muc_meeting_id.lua

 module:hook("muc-room-created", function(event)
     local room = event.room;
 
-    if is_healthcheck_room(room) then
+    if is_healthcheck_room(room.jid) then
         return;
     end
 

resources/prosody-plugins/mod_speakerstats_component.lua

 function room_created(event)
     local room = event.room;
 
-    if is_healthcheck_room(room) then
+    if is_healthcheck_room(room.jid) then
         return;
     end
 
 function occupant_joined(event)
     local room = event.room;
 
-    if is_healthcheck_room(room) then
+    if is_healthcheck_room(room.jid) then
         return;
     end
 
 function occupant_leaving(event)
     local room = event.room;
 
-    if is_healthcheck_room(room) then
+    if is_healthcheck_room(room.jid) then
         return;
     end
 
 function room_destroyed(event)
     local room = event.room;
 
-    if is_healthcheck_room(room) then
+    if is_healthcheck_room(room.jid) then
         return;
     end
 

resources/prosody-plugins/util.lib.lua

 function starts_with(str, start)
     return str:sub(1, #start) == start
 end
+
 -- healthcheck rooms in jicofo starts with a string '__jicofo-health-check'
-function is_healthcheck_room(room)
-    if starts_with(room.jid, "__jicofo-health-check") then
+function is_healthcheck_room(room_jid)
+    if starts_with(room_jid, "__jicofo-health-check") then
         return true;
     end