Imports of package checkpoint

PathSynopsis
fmtPackage fmt implements formatted I/O with functions analogous to C's printf and scanf.
github.com/dchest/safefilePackage safefile implements safe "atomic" saving of files.
github.com/ghodss/yaml
github.com/golang/glogPackage glog implements logging analogous to the Google-internal C++ INFO/ERROR/V setup.
io/ioutilPackage ioutil implements some I/O utility functions.
k8s.io/api/core/v1Package v1 is the v1 version of the core API.
k8s.io/kubernetes/pkg/apis/corePackage core contains the latest (or "internal") version of the Kubernetes API objects.
k8s.io/kubernetes/pkg/volume/utilPackage util contains utility code for use by volume plugins.
osPackage os provides a platform-independent interface to operating system functionality.
path/filepathPackage filepath implements utility routines for manipulating filename paths in a way compatible with the target operating system-defined file paths.
stringsPackage strings implements simple functions to manipulate UTF-8 encoded strings.
syncPackage sync provides basic synchronization primitives such as mutual exclusion locks.