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/go-openapi/swag/doc.go

@@ -0,0 +1,32 @@
+// 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 swag contains a bunch of helper functions for go-openapi and go-swagger projects.
+
+You may also use it standalone for your projects.
+
+  * convert between value and pointers for builtin types
+  * convert from string to builtin types (wraps strconv)
+  * fast json concatenation
+  * search in path
+  * load from file or http
+  * name mangling
+
+
+This repo has only few dependencies outside of the standard library:
+
+  * YAML utilities depend on gopkg.in/yaml.v2
+*/
+package swag