Imports of package validation

PathSynopsis
encoding/base64Package base64 implements base64 encoding as specified by RFC 4648.
fmtPackage fmt implements formatted I/O with functions analogous to C's printf and scanf.
k8s.io/apimachinery/pkg/util/setsPackage sets has generic set and specified sets.
k8s.io/apimachinery/pkg/util/validation/field
k8s.io/apiserver/pkg/apis/config
net/urlPackage url parses URLs and implements query escaping.
stringsPackage strings implements simple functions to manipulate UTF-8 encoded strings.