This can happen on upgrades from older deployments that lack
an ACME installation and don't meet the minimum requirements
to deploy one automatically.
Also don't consider missing ACME schema a total failure, just
log and skip it.
https://pagure.io/freeipa/issue/8832
Signed-off-by: Rob Crittenden <rcritten@redhat.com>
Reviewed-By: Florence Blanc-Renaud <frenaud@redhat.com>