This fix contains few things:
* Used k8s.gcr.io/debian-base-amd64:v2.0.0 as base image to build storage-provisioner
* Modify RBAC permission used to cluster-admin
* Build storage-provisioner as static binary
These two lint warnings still remain, after the cleanup:
"exported ... should have comment or be unexported"
"type name will be used as foo.FooBar by other packages,
and that stutters; consider calling this Bar"
Since minikube is the canonical kubernetes deployment for learning and playing with things, this trivial PR makes it easy to see the storage provisioner in action, the current logging shows very little easier to differentiate how volumes are spun up.