Imports of server_monitoring command

PathSynopsis
github.com/kr/prettyPackage pretty provides pretty-printing for Go values.
github.com/mongodb/mongo-go-driver/mongo/model
github.com/mongodb/mongo-go-driver/mongo/private/conn
github.com/mongodb/mongo-go-driver/mongo/private/server
logPackage log implements a simple logging package.
timePackage time provides functionality for measuring and displaying time.