named.conf: Disable duplicate zone on debian, and modify data dir

zone already imported via default zones.

Reviewed-By: Stanislav Laznicka <slaznick@redhat.com>
Reviewed-By: Christian Heimes <cheimes@redhat.com>

ipaplatform/base/constants.py

@@ -17,6 +17,8 @@ class BaseConstantsNamespace(object):
     KDCPROXY_USER = "kdcproxy"
     NAMED_USER = "named"
     NAMED_GROUP = "named"
+    NAMED_DATA_DIR = "data/"
+    NAMED_ZONE_COMMENT = ""
     PKI_USER = 'pkiuser'
     PKI_GROUP = 'pkiuser'
     # ntpd init variable used for daemon options