Bring back the manifest install support

[abasitt]

Currently the only supported way to install VPP is via Calico operator. There used to be a support previously to install via manifest as well, please bring that support back.

There are few kustomize example, may be this can be added as kustomize example as well. e.g. in my case to make it work. I took base calico.yaml base manifest and applied two patches. 1- configmap patch to update the dataplane_options. 2- calico-node patch to update ENV. https://github.com/tigera/operator/blob/master/pkg/render/node.go. Thanks @sknat for the help on slack.