add time to be sure the channel is ready

avatar/pandora_client.py

@@ -23,6 +23,8 @@
 import grpc.aio
 import logging
 
+import time
+
 from avatar.metrics.interceptors import aio_interceptors
 from avatar.metrics.interceptors import interceptors
 from bumble import pandora as bumble_server
@@ -112,6 +114,8 @@ async def reset(self) -> None:
                 await self._aio.channel.close()
                 self._aio = None
 
+                time.sleep(2)
+
                 # This call might fail if the server is unavailable.
                 self._address = Address(
                     (await self.aio.host.ReadLocalAddress(wait_for_ready=True, timeout=15.0)).address