Pylint issues in generated code

[catalinaperalta]

There are still some unresolved pylint issues that were reported here: #2826

Here is a link to the CI build that shows the remaining pylint issues: https://dev.azure.com/azure-sdk/public/_build/results?buildId=4124158&view=logs&j=b70e5e73-bbb6-5567-0939-8415943fadb9&t=5da75d26-b661-5189-46a3-f9dd247b5d85&l=108

Workaround was to disable the too-many-lines warning at the top of the file.

I would expect the generated code to not result in pylint warnings.

[msyyc]

Thanks for report and we will fix it asap.