Re-enable some KRA installation tests
    
    Some KRA installation tests were disabled due to failures caused by
    security domain session replication lag.  This problem has been
    addressed in Dogtag by introducing a default 5 second sleep after
    security domain login, to give more time for session data to be
    replicated to other hosts.  There is still a possibility for this
    kind of failure, but the delay minimises it.
    
    FreeIPA depends on the version of Dogtag that contains this change,
    so remove the failing-test annotations.
    
    Fixes: https://pagure.io/freeipa/issue/7220
    Reviewed-By: Christian Heimes <cheimes@redhat.com>