Imports of set-gen command

PathSynopsis
github.com/golang/glogPackage glog implements logging analogous to the Google-internal C++ INFO/ERROR/V setup.
k8s.io/kubernetes/cmd/libs/go2idl/args
k8s.io/kubernetes/cmd/libs/go2idl/set-gen/generators
osPackage os provides a platform-independent interface to operating system functionality.