Use vendored go-swagger (#8087)

* Use vendored go-swagger

* vendor go-swagger

* revert un wanteed change

* remove un-needed GO111MODULE

* Update Makefile

Co-Authored-By: techknowlogick <matti@mdranta.net>

vendor/github.com/mailru/easyjson/jlexer/bytestostr.go

@@ -0,0 +1,24 @@
+// This file will only be included to the build if neither
+// easyjson_nounsafe nor appengine build tag is set. See README notes
+// for more details.
+
+//+build !easyjson_nounsafe
+//+build !appengine
+
+package jlexer
+
+import (
+	"reflect"
+	"unsafe"
+)
+
+// bytesToStr creates a string pointing at the slice to avoid copying.
+//
+// Warning: the string returned by the function should be used with care, as the whole input data
+// chunk may be either blocked from being freed by GC because of a single string or the buffer.Data
+// may be garbage-collected even when the string exists.
+func bytesToStr(data []byte) string {
+	h := (*reflect.SliceHeader)(unsafe.Pointer(&data))
+	shdr := reflect.StringHeader{Data: h.Data, Len: h.Len}
+	return *(*string)(unsafe.Pointer(&shdr))
+}

vendor/github.com/mailru/easyjson/jlexer/bytestostr_nounsafe.go

@@ -0,0 +1,13 @@
+// This file is included to the build if any of the buildtags below
+// are defined. Refer to README notes for more details.
+
+//+build easyjson_nounsafe appengine
+
+package jlexer
+
+// bytesToStr creates a string normally from []byte
+//
+// Note that this method is roughly 1.5x slower than using the 'unsafe' method.
+func bytesToStr(data []byte) string {
+	return string(data)
+}

vendor/github.com/mailru/easyjson/jlexer/error.go

@@ -0,0 +1,15 @@
+package jlexer
+
+import "fmt"
+
+// LexerError implements the error interface and represents all possible errors that can be
+// generated during parsing the JSON data.
+type LexerError struct {
+	Reason string
+	Offset int
+	Data   string
+}
+
+func (l *LexerError) Error() string {
+	return fmt.Sprintf("parse error: %s near offset %d of '%s'", l.Reason, l.Offset, l.Data)
+}