TUN-6380: Enforce connect and keep-alive timeouts for TCP connections in both WARP routing and websocket based TCP proxy.

For WARP routing the defaults for these new settings are 5 seconds for connect timeout and 30 seconds for keep-alive timeout. These values can be configured either remotely or locally. Local config lives under "warp-routing" section in config.yaml.

For websocket-based proxy, the defaults come from originConfig settings (either global or per-service) and use the same defaults as HTTP proxying.

config/configuration_test.go

@@ -23,7 +23,9 @@ func TestConfigFileSettings(t *testing.T) {
 			Service:  "https://localhost:8001",
 		}
 		warpRouting = WarpRoutingConfig{
-			Enabled: true,
+			Enabled:        true,
+			ConnectTimeout: &CustomDuration{Duration: 2 * time.Second},
+			TCPKeepAlive:   &CustomDuration{Duration: 10 * time.Second},
 		}
 	)
 	rawYAML := `
@@ -48,6 +50,9 @@ ingress:
    service: https://localhost:8001
 warp-routing: 
   enabled: true
+  connectTimeout: 2s
+  tcpKeepAlive: 10s
+
 retries: 5
 grace-period: 30s
 percentage: 3.14