Accomodate for API change in the replication plugin

The introduction of `ConfigResource` and `ConfigResourceOverrides`[1]
required API chagnes in the replication plugin which in turn forced
changes in the pull-replication to fix the compliation errors.

[1] https://issues.gerritcodereview.com/issues/310510978

Bug: Issue 319053155
Change-Id: I01c398e437ffbb31105db02de05cab8188f1c9ac