Imports of package cluster

PathSynopsis
errorsPackage errors implements functions to manipulate errors.
fmtPackage fmt implements formatted I/O with functions analogous to C's printf and scanf.
github.com/docker/swarmkit/apiPackage api is a generated protocol buffer package.
github.com/docker/swarmkit/cli
github.com/docker/swarmkit/cmd/swarmctl/common
github.com/docker/swarmkit/protobuf/ptypesPackage ptypes is a copy of the golang/protobuf/ptypes that we'll need to use with our regenerated ptypes until google gets their act together and makes their "Well Known Types" actually usable by other parties.
github.com/spf13/cobraPackage cobra is a commander providing a simple interface to create powerful modern CLI interfaces.
golang.org/x/net/contextPackage context defines the Context type, which carries deadlines, cancellation signals, and other request-scoped values across API boundaries and between processes.
osPackage os provides a platform-independent interface to operating system functionality.
sortPackage sort provides primitives for sorting slices and user-defined collections.
text/tabwriterPackage tabwriter implements a write filter (tabwriter.Writer) that translates tabbed columns in input into properly aligned text.
timePackage time provides functionality for measuring and displaying time.