Imports of etcd command

PathSynopsis
fmtPackage fmt implements formatted I/O with functions analogous to C's printf and scanf.
github.com/coreos/etcd/log
github.com/coreos/etcd/server
github.com/coreos/etcd/storePackage store defines etcd's in-memory key/value store.
github.com/coreos/raft
osPackage os provides a platform-independent interface to operating system functionality.
os/signalPackage signal implements access to incoming signals.
runtime/pprofPackage pprof writes runtime profiling data in the format expected by the pprof visualization tool.
timePackage time provides functionality for measuring and displaying time.