tests: Fixed method failures during second call for the method
    
    When the same host is used for numerous server/replica
    installations/uninstallations at some point the /etc/openldap/ldap.conf file
    gets corruped which results in ldapsearch unaware of the default ldap_uri to
    connect. The workaround would be to provide ldap hostname for each ldapsearch.
    
    Attention: please unapply this fix once the original issue is resolved.
    
    https://fedorahosted.org/freeipa/ticket/5880
    
    Reviewed-By: David Kupka <dkupka@redhat.com>