Fix tests dns_realmdomains_integration

Added warning message about forwarders

Reviewed-By: Martin Kosek <mkosek@redhat.com>

ipatests/test_xmlrpc/test_dns_realmdomains_integration.py

@@ -141,6 +141,15 @@ class test_dns_realmdomains_integration(Declarative):
             expected={
                 'value': DNSName(dnszone_2_absolute),
                 'summary': None,
+                'messages': ({
+                    u'message': u'DNS forwarder semantics changed since '
+                    u'IPA 4.0.\nYou may want to use forward zones '
+                    u'(dnsforwardzone-*) instead.\nFor more details read '
+                    u'the docs.',
+                    u'code': 13002,
+                    u'type': u'warning',
+                    u'name': u'ForwardersWarning'
+                },),
                 'result': {
                     'dn': dnszone_2_dn,
                     'idnsname': [DNSName(dnszone_2_absolute)],