revert viper version to v1.4.0 (#5626)

* revert viper version to v1.4.0

Signed-off-by: wenhaozhou <wenhaozhou@yunify.com>

* update vendor

Signed-off-by: wenhaozhou <wenhaozhou@yunify.com>

---------

Signed-off-by: wenhaozhou <wenhaozhou@yunify.com>

vendor/gopkg.in/ini.v1/error.go

@@ -1,49 +0,0 @@
-// Copyright 2016 Unknwon
-//
-// 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 ini
-
-import (
-	"fmt"
-)
-
-// ErrDelimiterNotFound indicates the error type of no delimiter is found which there should be one.
-type ErrDelimiterNotFound struct {
-	Line string
-}
-
-// IsErrDelimiterNotFound returns true if the given error is an instance of ErrDelimiterNotFound.
-func IsErrDelimiterNotFound(err error) bool {
-	_, ok := err.(ErrDelimiterNotFound)
-	return ok
-}
-
-func (err ErrDelimiterNotFound) Error() string {
-	return fmt.Sprintf("key-value delimiter not found: %s", err.Line)
-}
-
-// ErrEmptyKeyName indicates the error type of no key name is found which there should be one.
-type ErrEmptyKeyName struct {
-	Line string
-}
-
-// IsErrEmptyKeyName returns true if the given error is an instance of ErrEmptyKeyName.
-func IsErrEmptyKeyName(err error) bool {
-	_, ok := err.(ErrEmptyKeyName)
-	return ok
-}
-
-func (err ErrEmptyKeyName) Error() string {
-	return fmt.Sprintf("empty key name: %s", err.Line)
-}