ipatests: call the CALess install method to generate the CA

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>

ipatests/test_integration/test_acme.py

@@ -104,6 +104,7 @@ class TestACME(CALessBase):
 
     @classmethod
     def install(cls, mh):
+        super(TestACME, cls).install(mh)
 
         # install packages before client install in case of IPA DNS problems
         cls.prepare_acme_client()