Merge pull request #4308 from jitsi/prosody-token-allow-asap-server-override

allows override of asap key server in token utility

resources/prosody-plugins/token/util.lib.lua

     return self
 end
 
+function Util:set_asap_key_server(asapKeyServer)
+    self.asapKeyServer = asapKeyServer
+end
+
 --- Returns the public key by keyID
 -- @param keyId the key ID to request
 -- @return the public key (the content of requested resource) or nil
 -- @param session the current session
 -- @return false and error
 function Util:process_and_verify_token(session)
-
     if session.auth_token == nil then
         if self.allowEmptyToken then
             return true;