Fixes for calico etcd mode (2.19 backport) (#9234)

release-2.19 backport of #9228

It seems that PR #8839 broke `calico_datastore: etcd` when it removed ipamconfig support for etcd mode.

This PR fixes some failing tasks when calico_datastore == etcd, but it does not restore ipamconfig support for calico in etcd mode. If someone wants to restore ipamconfig support for calico_datastore: etcd please submit a follow up PR for that.