Edit Resource Access Tokens API annotation
This adds the missing allowed values and defaults as per https://docs.gitlab.com/ee/api/project_access_tokens.html#create-a-project-access-token and https://docs.gitlab.com/ee/api/group_access_tokens.html#create-a-group-access-token.
The OpenAPI V2 documentation will be used for dogfooding API fuzzing as per #372422 (closed) and the OpenAPI autogeneration &8926.