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/sigs.k8s.io/controller-tools/pkg/markers/help.go

@@ -0,0 +1,81 @@
+/*
+Copyright 2019 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 markers
+
+// You *probably* don't want to write these structs by hand
+// -- use cmd/helpgen if you can write Godoc, and {Simple,Deprecated}Help
+// otherwise.
+
+// DetailedHelp contains brief help, as well as more details.
+// For the "full" help, join the two together.
+type DetailedHelp struct {
+	Summary string
+	Details string
+}
+
+// DefinitionHelp contains overall help for a marker Definition,
+// as well as per-field help.
+type DefinitionHelp struct {
+	// DetailedHelp contains the overall help for the marker.
+	DetailedHelp
+	// Category describes what kind of marker this is.
+	Category string
+	// DeprecatedInFavorOf marks the marker as deprecated.
+	// If non-nil & empty, it's assumed to just mean deprecated permanently.
+	// If non-empty, it's assumed to be a marker name.
+	DeprecatedInFavorOf *string
+
+	// NB(directxman12): we make FieldHelp be in terms of the Go struct field
+	// names so that we don't have to know the conversion or processing rules
+	// for struct fields at compile-time for help generation.
+
+	// FieldHelp defines the per-field help for this marker, *in terms of the
+	// go struct field names.  Use the FieldsHelp method to map this to
+	// marker argument names.
+	FieldHelp map[string]DetailedHelp
+}
+
+// FieldsHelp maps per-field help to the actual marker argument names from the
+// given definition.
+func (d *DefinitionHelp) FieldsHelp(def *Definition) map[string]DetailedHelp {
+	fieldsHelp := make(map[string]DetailedHelp, len(def.FieldNames))
+	for fieldName, argName := range def.FieldNames {
+		fieldsHelp[fieldName] = d.FieldHelp[argName]
+	}
+	return fieldsHelp
+}
+
+// SimpleHelp returns help that just has marker-level summary information
+// (e.g. for use with empty or primitive-typed markers, where Godoc-based
+// generation isn't possible).
+func SimpleHelp(category, summary string) *DefinitionHelp {
+	return &DefinitionHelp{
+		Category:     category,
+		DetailedHelp: DetailedHelp{Summary: summary},
+	}
+}
+
+// DeprecatedHelp returns simple help (a la SimpleHelp), except marked as
+// deprecated in favor of the given marker (or an empty string for just
+// deprecated).
+func DeprecatedHelp(inFavorOf, category, summary string) *DefinitionHelp {
+	return &DefinitionHelp{
+		Category:            category,
+		DetailedHelp:        DetailedHelp{Summary: summary},
+		DeprecatedInFavorOf: &inFavorOf,
+	}
+}