Allowlist "standard fields" for all request-unknown-fields rules

[noahdietz]

Many standard methods have a rule that warns on fields that are not considered part of the standard request message. The same AIPs for these rules often allow other standardized fields on request messages. We should make sure they are allow listed in any request-unknown-fields rules.

[packirisamykaran]

Hi, I want to contribute to this project and take on this issue as my first task. Could you guide me on this issue?

[toumorokoshi]

Hey! sorry we missed the comment.

You can take a look at the demo PR to get started: #968.

The work is effectively auditing every standard method AIP (google.aip.dev/131 through google.aip.dev/135), checking the wording to see all the allowed values, then modifying the request_unknown_fields.go rules: https://github.com/googleapis/api-linter/blob/main/rules/aip0131/request_unknown_fields.go.

And if you're interested in a more in-depth walkthrough, we do have a community meeting every other week. It's primarily focused on the AIPs themselves, but discussing linter rules is totally fine too: https://github.com/aip-dev/aip.dev#learn-and-connect.