Specify either --release name (to get the latest) or --version x.y.z to
get a specific version.
Adapt to updated locations on download.ceph.com so that we don't need to
know the release name for a specific x.y.z release.
Signed-off-by: Sage Weil <sage@redhat.com>
This was present, but a no-op.
By default, install cephadm.
Optionally take a list of packages to install instead (e.g., ceph-common).
Signed-off-by: Sage Weil <sage@redhat.com>
