Remove k8s.io/client-go/util/cert/triple

The package is unused.

hack/.golint_failures

@@ -653,7 +653,6 @@ staging/src/k8s.io/client-go/tools/portforward
 staging/src/k8s.io/client-go/tools/record
 staging/src/k8s.io/client-go/tools/reference
 staging/src/k8s.io/client-go/transport
-staging/src/k8s.io/client-go/util/cert/triple
 staging/src/k8s.io/client-go/util/exec
 staging/src/k8s.io/client-go/util/flowcontrol
 staging/src/k8s.io/client-go/util/integer

staging/src/k8s.io/client-go/util/cert/BUILD

@@ -37,9 +37,6 @@ filegroup(
 
 filegroup(
     name = "all-srcs",
-    srcs = [
+    srcs = [":package-srcs"],
-        ":package-srcs",
-        "//staging/src/k8s.io/client-go/util/cert/triple:all-srcs",
-    ],
     tags = ["automanaged"],
 )

staging/src/k8s.io/client-go/util/cert/triple/BUILD

@@ -1,27 +0,0 @@
-package(default_visibility = ["//visibility:public"])
-
-load(
-    "@io_bazel_rules_go//go:def.bzl",
-    "go_library",
-)
-
-go_library(
-    name = "go_default_library",
-    srcs = ["triple.go"],
-    importmap = "k8s.io/kubernetes/vendor/k8s.io/client-go/util/cert/triple",
-    importpath = "k8s.io/client-go/util/cert/triple",
-    deps = ["//staging/src/k8s.io/client-go/util/cert:go_default_library"],
-)
-
-filegroup(
-    name = "package-srcs",
-    srcs = glob(["**"]),
-    tags = ["automanaged"],
-    visibility = ["//visibility:private"],
-)
-
-filegroup(
-    name = "all-srcs",
-    srcs = [":package-srcs"],
-    tags = ["automanaged"],
-)

staging/src/k8s.io/client-go/util/cert/triple/triple.go

@@ -1,116 +0,0 @@
-/*
-Copyright 2016 The Kubernetes Authors.
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-*/
-
-// Package triple generates key-certificate pairs for the
-// triple (CA, Server, Client).
-package triple
-
-import (
-	"crypto/rsa"
-	"crypto/x509"
-	"fmt"
-	"net"
-
-	certutil "k8s.io/client-go/util/cert"
-)
-
-type KeyPair struct {
-	Key  *rsa.PrivateKey
-	Cert *x509.Certificate
-}
-
-func NewCA(name string) (*KeyPair, error) {
-	key, err := certutil.NewPrivateKey()
-	if err != nil {
-		return nil, fmt.Errorf("unable to create a private key for a new CA: %v", err)
-	}
-
-	config := certutil.Config{
-		CommonName: name,
-	}
-
-	cert, err := certutil.NewSelfSignedCACert(config, key)
-	if err != nil {
-		return nil, fmt.Errorf("unable to create a self-signed certificate for a new CA: %v", err)
-	}
-
-	return &KeyPair{
-		Key:  key,
-		Cert: cert,
-	}, nil
-}
-
-func NewServerKeyPair(ca *KeyPair, commonName, svcName, svcNamespace, dnsDomain string, ips, hostnames []string) (*KeyPair, error) {
-	key, err := certutil.NewPrivateKey()
-	if err != nil {
-		return nil, fmt.Errorf("unable to create a server private key: %v", err)
-	}
-
-	namespacedName := fmt.Sprintf("%s.%s", svcName, svcNamespace)
-	internalAPIServerFQDN := []string{
-		svcName,
-		namespacedName,
-		fmt.Sprintf("%s.svc", namespacedName),
-		fmt.Sprintf("%s.svc.%s", namespacedName, dnsDomain),
-	}
-
-	altNames := certutil.AltNames{}
-	for _, ipStr := range ips {
-		ip := net.ParseIP(ipStr)
-		if ip != nil {
-			altNames.IPs = append(altNames.IPs, ip)
-		}
-	}
-	altNames.DNSNames = append(altNames.DNSNames, hostnames...)
-	altNames.DNSNames = append(altNames.DNSNames, internalAPIServerFQDN...)
-
-	config := certutil.Config{
-		CommonName: commonName,
-		AltNames:   altNames,
-		Usages:     []x509.ExtKeyUsage{x509.ExtKeyUsageServerAuth},
-	}
-	cert, err := certutil.NewSignedCert(config, key, ca.Cert, ca.Key)
-	if err != nil {
-		return nil, fmt.Errorf("unable to sign the server certificate: %v", err)
-	}
-
-	return &KeyPair{
-		Key:  key,
-		Cert: cert,
-	}, nil
-}
-
-func NewClientKeyPair(ca *KeyPair, commonName string, organizations []string) (*KeyPair, error) {
-	key, err := certutil.NewPrivateKey()
-	if err != nil {
-		return nil, fmt.Errorf("unable to create a client private key: %v", err)
-	}
-
-	config := certutil.Config{
-		CommonName:   commonName,
-		Organization: organizations,
-		Usages:       []x509.ExtKeyUsage{x509.ExtKeyUsageClientAuth},
-	}
-	cert, err := certutil.NewSignedCert(config, key, ca.Cert, ca.Key)
-	if err != nil {
-		return nil, fmt.Errorf("unable to sign the client certificate: %v", err)
-	}
-
-	return &KeyPair{
-		Key:  key,
-		Cert: cert,
-	}, nil
-}