Update go dependencies

vendor/k8s.io/apiserver/pkg/server/healthz/doc.go

@@ -17,5 +17,5 @@ limitations under the License.
 // Package healthz implements basic http server health checking.
 // Usage:
 //   import "k8s.io/apiserver/pkg/server/healthz"
-//   healthz.DefaultHealthz()
+//   healthz.InstallHandler(mux)
 package healthz // import "k8s.io/apiserver/pkg/server/healthz"

vendor/k8s.io/apiserver/pkg/server/healthz/healthz.go

@@ -37,15 +37,6 @@ type HealthzChecker interface {
 	Check(req *http.Request) error
 }
 
-var defaultHealthz = sync.Once{}
-
-// DefaultHealthz installs the default healthz check to the http.DefaultServeMux.
-func DefaultHealthz(checks ...HealthzChecker) {
-	defaultHealthz.Do(func() {
-		InstallHandler(http.DefaultServeMux, checks...)
-	})
-}
-
 // PingHealthz returns true automatically when checked
 var PingHealthz HealthzChecker = ping{}
 
@@ -102,6 +93,14 @@ func InstallHandler(mux mux, checks ...HealthzChecker) {
 	InstallPathHandler(mux, "/healthz", checks...)
 }
 
+// InstallReadyzHandler registers handlers for health checking on the path
+// "/readyz" to mux. *All handlers* for mux must be specified in
+// exactly one call to InstallHandler. Calling InstallHandler more
+// than once for the same mux will result in a panic.
+func InstallReadyzHandler(mux mux, checks ...HealthzChecker) {
+	InstallPathHandler(mux, "/readyz", checks...)
+}
+
 // InstallPathHandler registers handlers for health checking on
 // a specific path to mux. *All handlers* for the path must be
 // specified in exactly one call to InstallPathHandler. Calling
@@ -181,6 +180,7 @@ func handleRootHealthz(checks ...HealthzChecker) http.HandlerFunc {
 		}
 		// always be verbose on failure
 		if failed {
+			klog.V(2).Infof("%vhealthz check failed", verboseOut.String())
 			http.Error(w, fmt.Sprintf("%vhealthz check failed", verboseOut.String()), http.StatusInternalServerError)
 			return
 		}