* fix: continue of deletion for del pod failed when can't found vpc or subnet

This reverts commit cc124556.

add log to file, update upgrade script

* Update cniserver.go

* Update config.go

* go fmt

Revert "Temporarily comment out the compile and upload of the centos8 compile…"

Temporarily comment out the compile and upload of the centos8 compile…

feat: add webhook for subnet update validation

add container compile, automatic insmod and openvswitch-kmod distribution.

add policy route for centralized subnet

append add cidr and excludeIps annotation for namespace

feat: update provider network via node annotation

Related to https://github.com/ovn-org/ovn/issues/112

* fix issue of  https://github.com/kubeovn/kube-ovn/issues/1151

When kube-ovn-controller starts in a cluster with lots of services, the previous empty match log will flood the screen:
```
I0208 00:31:03.804692       1 network_policy.go:789] match svc is []
I0208 00:31:03.804757       1 network_policy.go:789] match svc is []
I0208 00:31:03.804775       1 network_policy.go:789] match svc is []
I0208 00:31:03.804785       1 network_policy.go:789] match svc is []
I0208 00:31:03.804793       1 network_policy.go:789] match svc is []
I0208 00:31:03.804802       1 network_policy.go:789] match svc is []
I0208 00:31:03.804810       1 network_policy.go:789] match svc is []
I0208 00:31:03.804821       1 network_policy.go:789] match svc is []
I0208 00:31:03.804832       1 network_policy.go:789] match svc is []
```

* feat: Replace command health check with k8s tcpSocket check

* skip the missing of kube-dns

* skip missing of kube-dns when checking