Switch to v3 of github.com/emicklei/go-restful

Signed-off-by: Davanum Srinivas <davanum@gmail.com>

vendor/github.com/emicklei/go-restful/v3/service_error.go

@@ -0,0 +1,32 @@
+package restful
+
+// Copyright 2013 Ernest Micklei. All rights reserved.
+// Use of this source code is governed by a license
+// that can be found in the LICENSE file.
+
+import (
+	"fmt"
+	"net/http"
+)
+
+// ServiceError is a transport object to pass information about a non-Http error occurred in a WebService while processing a request.
+type ServiceError struct {
+	Code    int
+	Message string
+	Header  http.Header
+}
+
+// NewError returns a ServiceError using the code and reason
+func NewError(code int, message string) ServiceError {
+	return ServiceError{Code: code, Message: message}
+}
+
+// NewErrorWithHeader returns a ServiceError using the code, reason and header
+func NewErrorWithHeader(code int, message string, header http.Header) ServiceError {
+	return ServiceError{Code: code, Message: message, Header: header}
+}
+
+// Error returns a text representation of the service error
+func (s ServiceError) Error() string {
+	return fmt.Sprintf("[ServiceError:%v] %v", s.Code, s.Message)
+}