The pvc template name has either been require to be empty, or one of the
expected values such as data and metadata. Those who upgrade from 1.1
may find that if they changed it to something else, their upgrade will
fail when not one of these values. If there is only a single template,
always treat it as the data template.
Signed-off-by: Travis Nielsen <tnielsen@redhat.com>
(cherry picked from commit 2b9e7a53)