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/istio.io/api/mixer/v1/attributes_json.gen.go

@@ -0,0 +1,79 @@
+// Code generated by protoc-gen-gogo. DO NOT EDIT.
+// source: mixer/v1/attributes.proto
+
+package v1
+
+import (
+	bytes "bytes"
+	fmt "fmt"
+	_ "github.com/gogo/protobuf/gogoproto"
+	github_com_gogo_protobuf_jsonpb "github.com/gogo/protobuf/jsonpb"
+	proto "github.com/gogo/protobuf/proto"
+	_ "github.com/gogo/protobuf/types"
+	math "math"
+)
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ = proto.Marshal
+var _ = fmt.Errorf
+var _ = math.Inf
+
+// MarshalJSON is a custom marshaler for Attributes
+func (this *Attributes) MarshalJSON() ([]byte, error) {
+	str, err := AttributesMarshaler.MarshalToString(this)
+	return []byte(str), err
+}
+
+// UnmarshalJSON is a custom unmarshaler for Attributes
+func (this *Attributes) UnmarshalJSON(b []byte) error {
+	return AttributesUnmarshaler.Unmarshal(bytes.NewReader(b), this)
+}
+
+// MarshalJSON is a custom marshaler for Attributes_AttributeValue
+func (this *Attributes_AttributeValue) MarshalJSON() ([]byte, error) {
+	str, err := AttributesMarshaler.MarshalToString(this)
+	return []byte(str), err
+}
+
+// UnmarshalJSON is a custom unmarshaler for Attributes_AttributeValue
+func (this *Attributes_AttributeValue) UnmarshalJSON(b []byte) error {
+	return AttributesUnmarshaler.Unmarshal(bytes.NewReader(b), this)
+}
+
+// MarshalJSON is a custom marshaler for Attributes_StringMap
+func (this *Attributes_StringMap) MarshalJSON() ([]byte, error) {
+	str, err := AttributesMarshaler.MarshalToString(this)
+	return []byte(str), err
+}
+
+// UnmarshalJSON is a custom unmarshaler for Attributes_StringMap
+func (this *Attributes_StringMap) UnmarshalJSON(b []byte) error {
+	return AttributesUnmarshaler.Unmarshal(bytes.NewReader(b), this)
+}
+
+// MarshalJSON is a custom marshaler for CompressedAttributes
+func (this *CompressedAttributes) MarshalJSON() ([]byte, error) {
+	str, err := AttributesMarshaler.MarshalToString(this)
+	return []byte(str), err
+}
+
+// UnmarshalJSON is a custom unmarshaler for CompressedAttributes
+func (this *CompressedAttributes) UnmarshalJSON(b []byte) error {
+	return AttributesUnmarshaler.Unmarshal(bytes.NewReader(b), this)
+}
+
+// MarshalJSON is a custom marshaler for StringMap
+func (this *StringMap) MarshalJSON() ([]byte, error) {
+	str, err := AttributesMarshaler.MarshalToString(this)
+	return []byte(str), err
+}
+
+// UnmarshalJSON is a custom unmarshaler for StringMap
+func (this *StringMap) UnmarshalJSON(b []byte) error {
+	return AttributesUnmarshaler.Unmarshal(bytes.NewReader(b), this)
+}
+
+var (
+	AttributesMarshaler   = &github_com_gogo_protobuf_jsonpb.Marshaler{}
+	AttributesUnmarshaler = &github_com_gogo_protobuf_jsonpb.Unmarshaler{}
+)