Old host entries are missing object class with krbticketflags attribute. Therefore UI does not receive attrlevelrights for it. This OC is added when ipakrbokasdelegate is set.
This patch adds the usual hack for such cases.
https://fedorahosted.org/freeipa/ticket/3940
Tests modified to comply with PEP8 rules with exception of rule E501 (long lines).
Done by autopep8 tool and 2 manual modifications.
https://fedorahosted.org/freeipa/ticket/3744