Update CORS Plugin Documentation for Global Plugin

[axelsean]

Where is the problem?

https://docs.konghq.com/hub/kong-inc/cors/

What happened?

The global definition is not correct, specifically:

• If the upstream service does not have OPTIONS defined as a method then a 404 error is always returned (this seems like a bug in the implementation also)

See also:

• https://github.com/Kong/kong/issues/4859 which references the OPTIONS
• https://support.konghq.com/support/s/article/404-not-found-of-CORS-OPTIONS-requests - this is incomplete, the example doesn't work as written - needs to specify exactly what the kubernetes definition is

What did you expect to happen?

Needs text on how this needs to actually find a route, which implies a global OPTIONS route

Needs an example of the default route - see second link

Code of Conduct and Community Expectations

• [X] I agree to follow this project's Code of Conduct
• [X] I agree to abide by the Community Expectations

[axelsean]

This worked for me:

kong-global-cors.yaml.txt