feat: update rr yaml

example/echo/.rr.yaml

@@ -1,25 +1,25 @@
-version: "2.7"
+version: "3"
 rpc:
- listen: "tcp://127.0.0.1:6001"
+  listen: "tcp://127.0.0.1:6001"
 
 server:
- command: "php worker.php"
- relay: "pipes"
- relay_timeout: "20s"
+  command: "php worker.php"
+  relay: "pipes"
+  relay_timeout: "20s"
 
 grpc:
- listen: "tcp://127.0.0.1:9001"
- proto: "service.proto"
- max_send_msg_size: 50
- max_recv_msg_size: 50
- max_connection_idle: 0s
- max_connection_age: 0s
- max_connection_age_grace: 0s
- max_concurrent_streams: 10
- ping_time: 1s
- timeout: 200s
- pool:
- num_workers: 2
- max_jobs: 0
- allocate_timeout: 60s
- destroy_timeout: 60
+  listen: "tcp://127.0.0.1:9001"
+  proto: ["service.proto"]
+  max_send_msg_size: 50
+  max_recv_msg_size: 50
+  max_connection_idle: 0s
+  max_connection_age: 0s
+  max_connection_age_grace: 0s
+  max_concurrent_streams: 10
+  ping_time: 1s
+  timeout: 200s
+  pool:
+  num_workers: 2
+  max_jobs: 0
+  allocate_timeout: 60s
+  destroy_timeout: 60s