Fixes multiple files behavior in files rootfs
Fixes multiple files behavior in files rootfs

Some files may be left uncopied to the VM when there are multiple
files in the .minikube/files directory as the code misinterprets
the last parent dir as parent dirs for all files, which results
some files with the same name were not copied.

This patch fixes the behavior.

kubernetes/minikube,dlorenc/minikube,dalehamel/minikube,kubernetes/minikube,dlorenc/minikube,dlorenc/minikube,kubernetes/minikube,warmchang/minikube,warmchang/minikube,dalehamel/minikube,kubernetes/minikube,warmchang/minikube,warmchang/minikube,warmchang/minikube,warmchang/minikube,dlorenc/minikube,dlorenc/minikube,kubernetes/minikube,dlorenc/minikube,kubernetes/minikube,kubernetes/minikube,dlorenc/minikube,dalehamel/minikube,dlorenc/minikube,warmchang/minikube