Differences between original and this solution

Platform: I use VirtualBox to setup a local cluster, the original one uses GCP.
Nodes: 2 controlplane and 2 worker vs 2 controlplane and 3 worker nodes.
Configure 1 worker node normally and the second one with TLS bootstrap.
Node names: I use node01 node02 instead of worker-0 worker-1.
IP Addresses: I use statically assigned IPs on private network.
Certificate file names: I use <name>.crt for public certificate and <name>.key for private key file. Whereas original one uses <name>-.pem for certificate and <name>-key.pem for private key.
I generate separate certificates for etcd-server instead of using kube-apiserver.
Network: we use weavenet.
Add E2E Tests.