fd4b84d tests: Don't provide explicit hostname to ldapmodify

Authored and Committed by rcritten 5 years ago
    tests: Don't provide explicit hostname to ldapmodify
    
    Manual revert of bbac233b5ee487ab0e035cf0b861144769a0b738
    
    The assumption was that ldap.conf was hosed and it couldn't
    tell what hostname to use so one was hardcoded. This code
    doesn't explicitly test that ldap.conf is sane but it is
    a nice side-effect I suppose.
    
    https://pagure.io/freeipa/issue/5880
    Signed-off-by: Rob Crittenden <rcritten@redhat.com>
    Reviewed-By: Florence Blanc-Renaud <frenaud@redhat.com>