tests: add wrapper around ACME RSNv3 test
This test is located outside of the TestACMEPrune because
it enables RSNv3 while the server installed by TestACME doesn't.
It still needs a wrapper to enforce a version of PKI that
supports pruning because that is checked first in the tool.
Re-ordering that wouldn't be a good user experience.
https://pagure.io/freeipa/issue/9322
Signed-off-by: Rob Crittenden <rcritten@redhat.com>
Reviewed-By: Florence Blanc-Renaud <flo@redhat.com>