Imports of stats command

PathSynopsis
contextPackage context defines the Context type, which carries deadlines, cancellation signals, and other request-scoped values across API boundaries and between processes.
fmtPackage fmt implements formatted I/O with functions analogous to C's printf and scanf.
go.opencensus.io/exporter/stackdriver
go.opencensus.io/statsPackage stats contains support for OpenCensus stats recording.
go.opencensus.io/stats/viewPackage view contains support for collecting and exposing aggregates over stats.
logPackage log implements a simple logging package.
timePackage time provides functionality for measuring and displaying time.