Add generated file

This PR adds generated files under pkg/client and vendor folder.

vendor/github.com/go-openapi/spec/fixtures/expansion/circularSpec.json

@@ -0,0 +1 @@
+{"swagger":"2.0","info":{"title":"Swagger Sample","description":"Sample API Playground.","version":"1.0.0"},"basePath":"/v1","schemes":["http"],"consumes":["application/vdn.sample.v1+json"],"produces":["application/vdn.sample.v1+json"],"paths":{"/books":{"get":{"summary":"List all books","operationId":"listBooks","tags":["books"],"responses":{"200":{"headers":{"Link":{"type":"string"}},"description":"An array of books","schema":{"type":"array","items":{"$ref":"#/definitions/Book"}}},"default":{"description":"generic error response","schema":{"$ref":"#/definitions/Error"}}}}}},"definitions":{"Book":{"type":"object","required":["title","summary"],"properties":{"title":{"type":"string","example":"Winnie the Pooh"},"summary":{"type":"string","example":"Famous children's book"},"related_books":{"type":"array","items":{"$ref":"#/definitions/Book"}}}},"Error":{"type":"object","readOnly":true,"properties":{"code":{"type":"integer","format":"int64","example":400},"message":{"type":"string","example":"Unexpected error"}},"required":["message"]}}}