fix kerberos cluster API tests

=================================== FAILURES ===================================
______________ test_006_validate_kerberos_settings[10.234.65.10] _______________

ip = '10.234.65.10'
request = <FixtureRequest for <Function test_006_validate_kerberos_settings[10.234.65.10]>>

@pytest.mark.parametrize('ip', CLUSTER_IPS)
def test_006_validate_kerberos_settings(ip, request):
depends(request, ['JOINED_AD'])

payload = {
'query-filters': [["realm", "=", CLUSTER_ADS['DOMAIN']]],
'query-options': {'get': True},
}
url = f'http://{ip}/api/v2.0/kerberos/realm'
res = make_request('get', url, data=payload)
> assert res.status_code == 200, res.text
E AssertionError: {
E "message": ""
E }
E assert 404 == 200
E +404
E -200