Imports of package helpers

PathSynopsis
fmtPackage fmt implements formatted I/O with functions analogous to C's printf and scanf.
github.com/Microsoft/hcsshim/ext4/tar2ext4
github.com/Microsoft/hcsshim/pkg/securitypolicy
github.com/google/go-containerregistry/pkg/authn
github.com/google/go-containerregistry/pkg/name
github.com/google/go-containerregistry/pkg/v1
github.com/google/go-containerregistry/pkg/v1/remote