tests: Specify protocol in case of pyro4.

Previously this was the default value of the argument.

rhodecode/tests/pylons_plugin.py

@@ -218,7 +218,8 b' class Pyro4VCSServer(VCSServer):'
         self._args = args
 
     def wait_until_ready(self, timeout=30):
-        remote_server = vcs.create_vcsserver_proxy(self.server_and_port)
+        remote_server = vcs.create_vcsserver_proxy(
+            self.server_and_port, 'pyro4')
         start = time.time()
         with remote_server:
             while time.time() - start < timeout: