use istio client-go library instead of knative (#1661)

use istio client-go library instead of knative
bump kubernetes dependency version
change code coverage to codecov

vendor/k8s.io/code-generator/cmd/informer-gen/generators/factory.go

@@ -152,7 +152,7 @@ func NewSharedInformerFactory(client {{.clientSetInterface|raw}}, defaultResync
 // as specified here.
 // Deprecated: Please use NewSharedInformerFactoryWithOptions instead
 func NewFilteredSharedInformerFactory(client {{.clientSetInterface|raw}}, defaultResync {{.timeDuration|raw}}, namespace string, tweakListOptions {{.interfacesTweakListOptionsFunc|raw}}) SharedInformerFactory {
-	return NewSharedInformerFactoryWithOptions(client, defaultResync, WithNamespace(namespace), WithTweakListOptions(tweakListOptions)) 
+	return NewSharedInformerFactoryWithOptions(client, defaultResync, WithNamespace(namespace), WithTweakListOptions(tweakListOptions))
 }
 
 // NewSharedInformerFactoryWithOptions constructs a new instance of a SharedInformerFactory with additional options.
@@ -165,7 +165,7 @@ func NewSharedInformerFactoryWithOptions(client {{.clientSetInterface|raw}}, def
 		startedInformers: make(map[{{.reflectType|raw}}]bool),
 		customResync:     make(map[{{.reflectType|raw}}]{{.timeDuration|raw}}),
 	}
-	
+
 	// Apply all options
 	for _, opt := range options {
 		factory = opt(factory)

vendor/k8s.io/code-generator/cmd/informer-gen/generators/generic.go

@@ -22,6 +22,7 @@ import (
 	"strings"
 
 	clientgentypes "k8s.io/code-generator/cmd/client-gen/types"
+	codegennamer "k8s.io/code-generator/pkg/namer"
 	"k8s.io/gengo/generator"
 	"k8s.io/gengo/namer"
 	"k8s.io/gengo/types"
@@ -56,6 +57,7 @@ func (g *genericGenerator) Namers(c *generator.Context) namer.NameSystems {
 		"raw":                namer.NewRawNamer(g.outputPackage, g.imports),
 		"allLowercasePlural": namer.NewAllLowercasePluralNamer(pluralExceptions),
 		"publicPlural":       namer.NewPublicPluralNamer(pluralExceptions),
+		"resource":           codegennamer.NewTagOverrideNamer("resourceName", namer.NewAllLowercasePluralNamer(pluralExceptions)),
 	}
 }
 
@@ -111,7 +113,9 @@ func (g *genericGenerator) GenerateType(c *generator.Context, t *types.Type, w i
 				GoName:    namer.IC(v.Version.NonEmpty()),
 				Resources: orderer.OrderTypes(g.typesForGroupVersion[gv]),
 			}
-			schemeGVs[version] = c.Universe.Variable(types.Name{Package: g.typesForGroupVersion[gv][0].Name.Package, Name: "SchemeGroupVersion"})
+			func() {
+				schemeGVs[version] = c.Universe.Variable(types.Name{Package: g.typesForGroupVersion[gv][0].Name.Package, Name: "SchemeGroupVersion"})
+			}()
 			group.Versions = append(group.Versions, version)
 		}
 		sort.Sort(versionSort(group.Versions))
@@ -168,7 +172,7 @@ func (f *sharedInformerFactory) ForResource(resource {{.schemaGroupVersionResour
 			{{range $version := .Versions -}}
 	// Group={{$group.Name}}, Version={{.Name}}
 				{{range .Resources -}}
-	case {{index $.schemeGVs $version|raw}}.WithResource("{{.|allLowercasePlural}}"):
+	case {{index $.schemeGVs $version|raw}}.WithResource("{{.|resource}}"):
 		return &genericInformer{resource: resource.GroupResource(), informer: f.{{$GroupGoName}}().{{$version.GoName}}().{{.|publicPlural}}().Informer()}, nil
 				{{end}}
 			{{end}}

vendor/k8s.io/code-generator/cmd/informer-gen/generators/packages.go

@@ -283,7 +283,7 @@ func factoryInterfacePackage(basePackage string, boilerplate []byte, clientSetPa
 
 func groupPackage(basePackage string, groupVersions clientgentypes.GroupVersions, boilerplate []byte) generator.Package {
 	packagePath := filepath.Join(basePackage, groupVersions.PackageName)
-	groupPkgName := strings.Split(string(groupVersions.Group), ".")[0]
+	groupPkgName := strings.Split(string(groupVersions.PackageName), ".")[0]
 
 	return &generator.DefaultPackage{
 		PackageName: groupPkgName,

vendor/k8s.io/code-generator/cmd/informer-gen/generators/tags.go

@@ -1,33 +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 generators
-
-import (
-	"k8s.io/gengo/types"
-	"k8s.io/klog"
-)
-
-// extractBoolTagOrDie gets the comment-tags for the key and asserts that, if
-// it exists, the value is boolean.  If the tag did not exist, it returns
-// false.
-func extractBoolTagOrDie(key string, lines []string) bool {
-	val, err := types.ExtractSingleBoolCommentTag("+", key, false, lines)
-	if err != nil {
-		klog.Fatal(err)
-	}
-	return val
-}