Switch to use the new registry tests suite

test/registry/liveserverfixture.py

@@ -68,14 +68,16 @@ class liveFlaskServer(object):
     start_time = time.time()
 
     while True:
+      time.sleep(0.1)
+
       elapsed_time = (time.time() - start_time)
       if elapsed_time > timeout:
         raise RuntimeError("Failed to start the server after %d seconds. " % timeout)
 
-      if self._can_ping_server():
+      if self._can_connect():
         break
 
-  def _can_ping_server(self):
+  def _can_connect(self):
     host, port = self._get_server_address()
     if port == 0:
       # Port specified by the user was 0, and the OS has not yet assigned