g3proxy: default to use yaml conf file extension

g3proxy/examples/escaper_route_select/g3proxy.yaml

@@ -0,0 +1,43 @@
+---
+runtime:
+  thread_number: 2
+
+controller:
+  local:
+    recv_timeout: 30
+    send_timeout: 1
+
+server:
+  - name: server_random
+    escaper: random
+    type: http_proxy
+    listen:
+      address: "[::]:10086"
+    conn_limit: 100M
+
+resolver:
+  - name: default
+    type: c-ares
+    server: 223.5.5.5
+
+escaper:
+  - name: direct1
+    type: direct_fixed
+    no_ipv6: true
+    resolver: default
+    resolve_strategy: IPv4Only
+    tcp_conn_limit: 80M
+    udp_relay_limit: 10M
+  - name: direct2
+    type: direct_fixed
+    no_ipv6: true
+    resolver: default
+    resolve_strategy: IPv4Only
+    tcp_conn_limit: 80M
+    udp_relay_limit: 10M
+  - name: random
+    type: route_select
+    next_nodes:
+      - direct1
+      - direct2
+    next_pick_policy: random