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/validate/doc.go

@@ -0,0 +1,85 @@
+// 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 validate provides methods to validate a swagger specification,
+as well as tools to validate data against their schema.
+
+This package follows Swagger 2.0. specification (aka OpenAPI 2.0). Reference
+can be found here: https://github.com/OAI/OpenAPI-Specification/blob/master/versions/2.0.md.
+
+Validating a specification
+
+Validates a spec document (from JSON or YAML) against the JSON schema for swagger,
+then checks a number of extra rules that can't be expressed in JSON schema.
+
+Entry points:
+  - Spec()
+  - NewSpecValidator()
+  - SpecValidator.Validate()
+
+Reported as errors:
+  [x] definition can't declare a property that's already defined by one of its ancestors
+  [x] definition's ancestor can't be a descendant of the same model
+  [x] path uniqueness: each api path should be non-verbatim (account for path param names) unique per method
+  [x] each security reference should contain only unique scopes
+  [x] each security scope in a security definition should be unique
+  [x] parameters in path must be unique
+  [x] each path parameter must correspond to a parameter placeholder and vice versa
+  [x] each referenceable definition must have references
+  [x] each definition property listed in the required array must be defined in the properties of the model
+  [x] each parameter should have a unique `name` and `type` combination
+  [x] each operation should have only 1 parameter of type body
+  [x] each reference must point to a valid object
+  [x] every default value that is specified must validate against the schema for that property
+  [x] items property is required for all schemas/definitions of type `array`
+  [x] path parameters must be declared a required
+  [x] headers must not contain $ref
+  [x] schema and property examples provided must validate against their respective object's schema
+  [x] examples provided must validate their schema
+
+Reported as warnings:
+  [x] path parameters should not contain any of [{,},\w]
+  [x] empty path
+  [x] unused definitions
+  [x] unsupported validation of examples on non-JSON media types
+  [x] examples in response without schema
+  [x] readOnly properties should not be required
+
+Validating a schema
+
+The schema validation toolkit validates data against JSON-schema-draft 04 schema.
+
+It is tested against the full json-schema-testing-suite (https://github.com/json-schema-org/JSON-Schema-Test-Suite),
+except for the optional part (bignum, ECMA regexp, ...).
+
+It supports the complete JSON-schema vocabulary, including keywords not supported by Swagger (e.g. additionalItems, ...)
+
+Entry points:
+  - AgainstSchema()
+  - ...
+
+Known limitations
+
+With the current version of this package, the following aspects of swagger are not yet supported:
+  [ ] errors and warnings are not reported with key/line number in spec
+  [ ] default values and examples on responses only support application/json producer type
+  [ ] invalid numeric constraints (such as Minimum, etc..) are not checked except for default and example values
+  [ ] rules for collectionFormat are not implemented
+  [ ] no validation rule for polymorphism support (discriminator) [not done here]
+  [ ] valid js ECMA regexp not supported by Go regexp engine are considered invalid
+  [ ] arbitrary large numbers are not supported: max is math.MaxFloat64
+
+*/
+package validate