Imports of out-of-cluster-client-configuration command

PathSynopsis
contextPackage context defines the Context type, which carries deadlines, cancellation signals, and other request-scoped values across API boundaries and between processes.
flagPackage flag implements command-line flag parsing.
fmtPackage fmt implements formatted I/O with functions analogous to C's printf and scanf.
k8s.io/apimachinery/pkg/api/errorsPackage errors provides detailed error types for api field validation.
k8s.io/apimachinery/pkg/apis/meta/v1Package v1 contains API types that are common to all versions.
k8s.io/client-go/kubernetesPackage kubernetes holds packages which implement a clientset for Kubernetes APIs.
k8s.io/client-go/tools/clientcmdPackage clientcmd provides one stop shopping for building a working client from a fixed config, from a .kubeconfig file, from command line flags, or from any merged combination.
k8s.io/client-go/util/homedir
path/filepathPackage filepath implements utility routines for manipulating filename paths in a way compatible with the target operating system-defined file paths.
timePackage time provides functionality for measuring and displaying time.