Imports of nsinit command

PathSynopsis
bytesPackage bytes implements functions for the manipulation of byte slices.
encoding/jsonPackage json implements encoding and decoding of JSON as defined in RFC 7159.
fmtPackage fmt implements formatted I/O with functions analogous to C's printf and scanf.
github.com/Sirupsen/logrus
github.com/codegangsta/cli
github.com/docker/docker/pkg/term
github.com/docker/libcontainerLibcontainer provides a native Go implementation for creating containers with namespaces, cgroups, capabilities, and filesystem access controls.
github.com/docker/libcontainer/cgroups/systemd
github.com/docker/libcontainer/configs
github.com/docker/libcontainer/nsenter
github.com/docker/libcontainer/utils
ioPackage io provides basic interfaces to I/O primitives.
mathPackage math provides basic constants and mathematical functions.
osPackage os provides a platform-independent interface to operating system functionality.
os/execPackage exec runs external commands.
os/signalPackage signal implements access to incoming signals.
path/filepathPackage filepath implements utility routines for manipulating filename paths in a way compatible with the target operating system-defined file paths.
runtimePackage runtime contains operations that interact with Go's runtime system, such as functions to control goroutines.
stringsPackage strings implements simple functions to manipulate UTF-8 encoded strings.
syscallPackage syscall contains an interface to the low-level operating system primitives.