[antlir2][rpm] repodata action must run locally

Summary:
This doesn't work remotely because it downloads `cas_artifact`s that are using
a different `use_case` that is not available on RE.

Somehow, scuba claims that 1% of actions run on RE and succeed, but that should
be impossible. Either way, almost all of these are either served by the cache
or run locally.
https://fburl.com/scuba/buck2_actions/a95j7qh4

Test Plan: testhard

Reviewed By: epilatow

Differential Revision: D68028682

fbshipit-source-id: ad297ec611f25aa654ff8bbda48ac26ed989f308

antlir/antlir2/package_managers/dnf/rules/repo.bzl

@@ -45,6 +45,8 @@ def _impl(ctx: AnalysisContext) -> list[Provider]:
                 optional_args,
             ),
             category = "repodata",
+            local_only = True,
+            allow_cache_upload = True,
         )
     else:
         plain_repodata = ctx.attrs.repodata