There are few important params we miss on the vmware install env:

https://github.com/kubernetes-sigs/cluster-api-provider-vsphere/blob/master/docs/getting_started.md

Namely:

• Folder (a more fine grained grouping of VMs than cluster but similar to it...)
• datastore (e.g. what storage to use to create the VMs on)
• network (what vm network to use)
• resource pool (a way to allow compartmentalize all resources in a cluster)