[Spec] adds XmlItem model and route for xml testing (!1808) · Merge requests · OpenAPI Tools / openapi-generator

Created by: spacether

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Ran the shell script under ./bin/ to update Petstore sample so that CIs can verify the change. (For instance, only need to run ./bin/{LANG}-petstore.sh and ./bin/security/{LANG}-petstore.sh if updating the {LANG} (e.g. php, ruby, python, etc) code generator or {LANG} client's mustache templates). Windows batch files can be found in .\bin\windows\.
Filed the PR against the correct branch: master~~, 3.4.x, 4.0.x~~. Default: master.
Copied the technical committee to review the pull request if your PR is targeting a particular programming language. @wing328 @jimschubert @cbornet @jaz-ah @ackintosh @JFCote @jmini

This PR adds the model XmlItem and a route that uses it to the swagger 2.0 sample spec. It also includes 6 xml mime types that are produced + consumed in that route. Downstream clients can use this model and that route for their xml tests.
It adds an Api suffix on the java rest-assured client to pass CircleCi tests
It pegs the versions of pytest and pytest-cov to fix and pass TravisCI tests
It fixes the python models get_real_child_model method so deserialization tests pass
Removes unused models and tests from the sample python clients

The examples currently in the spec do not include all xml attributes. The XmlItem model includes all xml attributes:

When merged this PR will close these issues: