ipatests: Clean up existing ACME registration and certs
The same base class is used for ACME setup and configuration.
Be sure to clean up any existing registraton prior to continuing
otherwise ACME register will complain.
https://pagure.io/freeipa/issue/8581
Signed-off-by: Rob Crittenden <rcritten@redhat.com>
Reviewed-By: Florence Blanc-Renaud <frenaud@redhat.com>
Reviewed-By: Mohammad Rizwan <myusuf@redhat.com>
Reviewed-By: Armando Neto <abiagion@redhat.com>