[Raven-L7] port-forward fail

[shyer]

https://openyurt.io/zh/docs/next/installation/raven-l7-proxy-prepare/

kubectl -n kube-system port-forward pod/yurt-hub-k8s-test-edge-02 2222:22

error: error upgrading connection: unable to upgrade connection: request host 192.168.203.70:6443 and url /portForward/kube-system/yurt-hub-k8s-test-edge-02 is invalid

logs:

I1121 11:43:16.355073 1 manageheader.go:84] ProxyServer: normal request with host 192.168.203.70:6443 and url /portForward/kube-system/yurt-hub-k8s-test-edge-02 is processed by header manager
W1121 11:43:16.355143 1 manageheader.go:173] ProxyServer: raven proxy server not support dest address 192.168.203.70 and request.URL is /portForward/kube-system/yurt-hub-k8s-test-edge-02
E1121 11:43:16.355156 1 interceptor.go:279] ProxyServer: request host 192.168.203.70:6443 and url /portForward/kube-system/yurt-hub-k8s-test-edge-02 is invalid

/portForward/kube-system/yurt-hub-k8s-test-edge-02 len(parts) is 4 < 5

raven/pkg/proxyengine/proxyserver/manageheader.go

Line 209 in a27a77e

if len(parts) < 5 {