Update k8s client-go to v6.0.0 (#1340)

* Update k8s client-go to v6.0.0

This fix updates k8s client-go to v6.0.0 as CoreDNS is supported
in 1.9 and v6.0.0 is the recommended version.

There are quite some massive changes that need to be made:
1. k8s.io/client-go/pkg/api/v1 has been changed to k8s.io/api/v1 (repo changed from `client-go` to `api`)
2. kubernetes.Clientset adds one extra layer, so that `kubernetes.Clientset.Services()` and like has been changed to `kubernetes.Clientset.CoreV1().Services()`

Also, we have to stick with specific commits of `k8s.io/apimachinery` and the newly introduced `k8s.io/api`
because go dep still could not figure out the right version to fetch.

Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

* Update vendor with `dep ensure --update` and `dep prune`

Signed-off-by: Yong Tang <yong.tang.github@outlook.com>

1 files changed, 0 insertions, 152 deletions

diff --git a/vendor/github.com/go-openapi/strfmt/date.go b/vendor/github.com/go-openapi/strfmt/date.go
deleted file mode 100644
index 24a11db26..000000000
--- a/vendor/github.com/go-openapi/strfmt/date.go
+++ /dev/null
@@ -1,152 +0,0 @@
-// Copyright 2015 go-swagger maintainers
-//
-// 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 strfmt
-
-import (
-	"database/sql/driver"
-	"errors"
-	"fmt"
-	"regexp"
-	"time"
-
-	"gopkg.in/mgo.v2/bson"
-
-	"github.com/mailru/easyjson/jlexer"
-	"github.com/mailru/easyjson/jwriter"
-)
-
-func init() {
-	d := Date{}
-	Default.Add("date", &d, IsDate)
-}
-
-// IsDate returns true when the string is a valid date
-func IsDate(str string) bool {
-	matches := rxDate.FindAllStringSubmatch(str, -1)
-	if len(matches) == 0 || len(matches[0]) == 0 {
-		return false
-	}
-	m := matches[0]
-	return !(m[2] < "01" || m[2] > "12" || m[3] < "01" || m[3] > "31")
-}
-
-const (
-	// RFC3339FullDate represents a full-date as specified by RFC3339
-	// See: http://goo.gl/xXOvVd
-	RFC3339FullDate = "2006-01-02"
-	// DatePattern pattern to match for the date format from http://tools.ietf.org/html/rfc3339#section-5.6
-	DatePattern = `^([0-9]{4})-([0-9]{2})-([0-9]{2})`
-)
-
-var (
-	rxDate = regexp.MustCompile(DatePattern)
-)
-
-// Date represents a date from the API
-//
-// swagger:strfmt date
-type Date time.Time
-
-// String converts this date into a string
-func (d Date) String() string {
-	return time.Time(d).Format(RFC3339FullDate)
-}
-
-// UnmarshalText parses a text representation into a date type
-func (d *Date) UnmarshalText(text []byte) error {
-	if len(text) == 0 {
-		return nil
-	}
-	dd, err := time.Parse(RFC3339FullDate, string(text))
-	if err != nil {
-		return err
-	}
-	*d = Date(dd)
-	return nil
-}
-
-// MarshalText serializes this date type to string
-func (d Date) MarshalText() ([]byte, error) {
-	return []byte(d.String()), nil
-}
-
-// Scan scans a Date value from database driver type.
-func (d *Date) Scan(raw interface{}) error {
-	switch v := raw.(type) {
-	case []byte:
-		return d.UnmarshalText(v)
-	case string:
-		return d.UnmarshalText([]byte(v))
-	case time.Time:
-		*d = Date(v)
-		return nil
-	case nil:
-		*d = Date{}
-		return nil
-	default:
-		return fmt.Errorf("cannot sql.Scan() strfmt.Date from: %#v", v)
-	}
-}
-
-// Value converts Date to a primitive value ready to written to a database.
-func (d Date) Value() (driver.Value, error) {
-	return driver.Value(d.String()), nil
-}
-
-func (t Date) MarshalJSON() ([]byte, error) {
-	var w jwriter.Writer
-	t.MarshalEasyJSON(&w)
-	return w.BuildBytes()
-}
-
-func (t Date) MarshalEasyJSON(w *jwriter.Writer) {
-	w.String(time.Time(t).Format(RFC3339FullDate))
-}
-
-func (t *Date) UnmarshalJSON(data []byte) error {
-	l := jlexer.Lexer{Data: data}
-	t.UnmarshalEasyJSON(&l)
-	return l.Error()
-}
-
-func (t *Date) UnmarshalEasyJSON(in *jlexer.Lexer) {
-	if data := in.String(); in.Ok() {
-		tt, err := time.Parse(RFC3339FullDate, data)
-		if err != nil {
-			in.AddError(err)
-			return
-		}
-		*t = Date(tt)
-	}
-}
-
-func (t *Date) GetBSON() (interface{}, error) {
-	return bson.M{"data": t.String()}, nil
-}
-
-func (t *Date) SetBSON(raw bson.Raw) error {
-	var m bson.M
-	if err := raw.Unmarshal(&m); err != nil {
-		return err
-	}
-
-	if data, ok := m["data"].(string); ok {
-		rd, err := time.Parse(RFC3339FullDate, data)
-		*t = Date(rd)
-		return err
-	}
-
-	return errors.New("couldn't unmarshal bson raw value as Duration")
-}