Add timeout property in default configuration

proxy/src/main/resources/default-velocity.toml

@@ -105,6 +105,9 @@ connection-timeout = 5000
 # Specify a read timeout for connections here. The default is 30 seconds.
 read-timeout = 30000
 
+# Specify an initial read timeout for connections here. The default is 3 seconds.
+initial-read-timeout = 3000
+
 # Enables compatibility with HAProxy.
 proxy-protocol = false