This ensures that the base class is applied, setting the required hash
values in swift.conf properly when deploying a proxy node without the
storage service at the same time.
Closes-Bug: 1732663
Depends-On: I11c044bbc8b9f56f95ace9320cc77303d9a7543e
Change-Id: Id916413c9d74071968d9988b604664fad30282b2
(cherry picked from commit 41921cfa76)