when beacon node disconnects attestation stream spams the logs with infinite loop of `[2020-04-10 08:20:43] ERROR beaconclient: Could not receive attestations from beacon node error=rpc error: code = Canceled desc = Context canceled`
when beacon node disconnects attestation stream spams the logs with infinite loop of
[2020-04-10 08:20:43] ERROR beaconclient: Could not receive attestations from beacon node error=rpc error: code = Canceled desc = Context canceled