api: Stop requiring links/source_permissions parameters
According to https://www.puppet.com/docs/puppet/7/http_api/http_file_metadata.html#parameters links and source_permissions parameters are optional rather than mandatory.
Bug: T364589
How to register an account on GitLab. To prevent spam, new accounts are locked until approved by an admin or the approver bot. You can also file an unlock request to expedite access.
Support: mw:GitLab, how to host a project on GitLab, #wikimedia-gitlab on libera.chat, #GitLab on Phabricator.
According to https://www.puppet.com/docs/puppet/7/http_api/http_file_metadata.html#parameters links and source_permissions parameters are optional rather than mandatory.
Bug: T364589