This will create a complete Kubernetes cluster on GKE bootstrapped with helm. This will also be installed by default:
terraform init
terraform apply
terraform apply \
-var 'zone=europe-north1-a' \
-var 'machine_type=n1-standard-1' \
-var 'node_count=3' \
-var 'disk_size_gb=50' \
-var 'cluster_name=bumblebee'