Fix a bug with authentication API endpoint returning internal server error under gunicorn if auth.api_url config option was not set #4809
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This pull request fixes a bug with
POST /auth/v1/tokens
API endpoint returning internal server error when running under gunicorn withoutauth.api_url
config option being set.NOTE: First I couldn't reproduce the issue, but it turns out it only happens when using gunicorn deployment.
When running st2auh directly, the WSGI implementation simply casts all the "None" header values to empty strings, but that's not the case for gunicorn.
Originally reported here - https://forum.stackstorm.com/t/ldap-error-handling-api-call-failed-expected-string-or-buffer/893.