k0s k0s doesn't create the users it needs

In k0s we have the following users:

	// EtcdUser defines the user to use for running etcd process
	EtcdUser = "etcd"
	// KineUser defines the user to use for running kine process
	KineUser = "kube-apiserver" // apiserver needs to be able to read the kine unix socket
	// ApiserverUser defines the user to use for running k8s api-server process
	ApiserverUser = "kube-apiserver"
	// SchedulerUser defines the user to use for running k8s scheduler
	SchedulerUser = "kube-scheduler"
	// KonnectivityServerUser deinfes the user to use for konnectivity-server
	KonnectivityServerUser = "konnectivity-server"

We usually try to figure out the uid of the user:

pkg/component/controller/konnectivity.go
69:     k.uid, err = users.GetUID(constant.KonnectivityServerUser)

To run the process as:

pkg/component/controller/konnectivity.go
184:    k.supervisor = &supervisor.Supervisor{
185-            Name:    "konnectivity",
186-            BinPath: assets.BinPath("konnectivity-server", k.K0sVars.BinDir),
187-            DataDir: k.K0sVars.DataDir,
188-            RunDir:  k.K0sVars.RunDir,
189-            Args:    args.ToArgs(),
190-            UID:     k.uid,
191-    }

The problem is that there isn't a component which creates the users, which effectively means all these components end up running as root.

I think we should create the users in each component. We already have a function to do this called install.EnsureUsers