- generate node names when transforming from simple to cluster config
- ClusterCreate(clusterconfig) should have a ready made config and not
generate variables
- ClusterCreate() only prep LB if not already present (to be removed)
- cluster struct: serverloadbalancer is now of type LoadBalancer (Node +
Config)
- use new nodefilter syntax with 'id:index:suffix' instead of
'id[index]' everywhere
- use suffix when creating the LB
- literal @s can now be escaped with a preceeding backslash
- use case e.g. `--env HTTPS_PROXY=user:pass\@myproxy.com`
- if the last char before a non-literal @ (designating a following
nodefilter) is a backslash, then it can be escaped with another
backslash (no cascading escapes though)
Add new command verb `k3stoken` to `k3d get`
Populate cluster secret field
Add test for `k3d get k3stoken` command
Externalize validable flag `--all`, in anticipation to reuse into `getKubeConfig.go`
