RRG should support the [`GetPlatformInfo`][info-action] action. It does not have any input arguments and should respond with [`Uname`][info-response]. [info-action]: https://github.com/google/grr/blob/f0c26b1e83e77a8f53f7b7aef706b418061682ae/grr/client/grr_response_client/client_actions/admin.py#L60-L66 [info-response]: https://github.com/google/grr/blob/f0c26b1e83e77a8f53f7b7aef706b418061682ae/grr/proto/grr_response_proto/jobs.proto#L859-L901