Pulp is running gunicorn's cli parser on startup.

[gerrod3]

Version
pulp>=3.44,<3.51

Describe the bug
From this change: 55043f3, Pulp began loading the gunicorn defaults when starting. Part of gunicorn default loading is parsing the arguments passed in: https://github.com/benoitc/gunicorn/blob/master/gunicorn/app/base.py#L158. This happens to work since we mostly duplicate every option for our entrypoints. However our --limit-request-field-size option does not match what gunicorn uses: --limit-request-field_size (https://docs.gunicorn.org/en/stable/settings.html#limit-request-field-size). If you specify this option you will get an error when gunicorn parses the cli args.

We shouldn't let gunicorn parse our cli args.