Imports of klogr command

PathSynopsis
flagPackage flag implements command-line flag parsing.
k8s.io/klogPackage klog implements logging analogous to the Google-internal C++ INFO/ERROR/V setup.
k8s.io/klog/klogrPackage klogr implements github.com/go-logr/logr.Logger in terms of k8s.io/klog.