Bump cfssl to 56268a6

vendor/github.com/cloudflare/cfssl/api/health/BUILD

@@ -0,0 +1,24 @@
+load("@io_bazel_rules_go//go:def.bzl", "go_library")
+
+go_library(
+    name = "go_default_library",
+    srcs = ["health.go"],
+    importmap = "k8s.io/kubernetes/vendor/github.com/cloudflare/cfssl/api/health",
+    importpath = "github.com/cloudflare/cfssl/api/health",
+    visibility = ["//visibility:public"],
+    deps = ["//vendor/github.com/cloudflare/cfssl/api:go_default_library"],
+)
+
+filegroup(
+    name = "package-srcs",
+    srcs = glob(["**"]),
+    tags = ["automanaged"],
+    visibility = ["//visibility:private"],
+)
+
+filegroup(
+    name = "all-srcs",
+    srcs = [":package-srcs"],
+    tags = ["automanaged"],
+    visibility = ["//visibility:public"],
+)

vendor/github.com/cloudflare/cfssl/api/health/health.go

@@ -0,0 +1,26 @@
+package health
+
+import (
+	"encoding/json"
+	"net/http"
+
+	"github.com/cloudflare/cfssl/api"
+)
+
+// Response contains the response to the /health API
+type Response struct {
+	Healthy bool `json:"healthy"`
+}
+
+func healthHandler(w http.ResponseWriter, r *http.Request) error {
+	response := api.NewSuccessResponse(&Response{Healthy: true})
+	return json.NewEncoder(w).Encode(response)
+}
+
+// NewHealthCheck creates a new handler to serve health checks.
+func NewHealthCheck() http.Handler {
+	return api.HTTPHandler{
+		Handler: api.HandlerFunc(healthHandler),
+		Methods: []string{"GET"},
+	}
+}