A new helm repo index was created from scratch for every new release
which meant that the release timestamps in the index were basically all
identical.
This change intends to fix that by merging the new index with the
existing one
The first attempt to fix this (PR #16033) did not work properly.
This change is intended to fix the issue for good by closing the gap the
previuous PR has left.
Fixes: #15604
Co-Authored-By: Travis Nielsen <tnielsen@redhat.com>
Signed-off-by: Michael Adam <obnox@samba.org>