Update dependencies to K8s 1.8

vendor/k8s.io/kubernetes/pkg/util/version/version.go

@@ -121,11 +121,39 @@ func MustParseSemantic(str string) *Version {
 	return v
 }
 
+// Major returns the major release number
+func (v *Version) Major() uint {
+	return v.components[0]
+}
+
+// Minor returns the minor release number
+func (v *Version) Minor() uint {
+	return v.components[1]
+}
+
+// Patch returns the patch release number if v is a Semantic Version, or 0
+func (v *Version) Patch() uint {
+	if len(v.components) < 3 {
+		return 0
+	}
+	return v.components[2]
+}
+
 // BuildMetadata returns the build metadata, if v is a Semantic Version, or ""
 func (v *Version) BuildMetadata() string {
 	return v.buildMetadata
 }
 
+// PreRelease returns the prerelease metadata, if v is a Semantic Version, or ""
+func (v *Version) PreRelease() string {
+	return v.preRelease
+}
+
+// Components returns the version number components
+func (v *Version) Components() []uint {
+	return v.components
+}
+
 // String converts a Version back to a string; note that for versions parsed with
 // ParseGeneric, this will not include the trailing uninterpreted portion of the version
 // number.