Set BIND to use ldapi and use fake mname

The fake_mname for now doesn't exists but is a feature that will be
added in the near future. Since any unknown arguments to bind-dyndb-ldap
are ignored, we are safe to use it now.

install/share/bind.named.conf.template

@@ -32,8 +32,9 @@ include "/etc/named.rfc1912.zones";
 
 dynamic-db "ipa" {
 	library "ldap.so";
-	arg "uri ldap://$FQDN";
+	arg "uri ldapi://%2fvar%2frun%2fslapd-$SERVER_ID.socket";
 	arg "base cn=dns, $SUFFIX";
+	arg "fake_mname $FQDN";
 	arg "auth_method sasl";
 	arg "sasl_mech GSSAPI";
 	arg "sasl_user DNS/$FQDN";

ipaserver/install/bindinstance.py

@@ -26,6 +26,7 @@ import installutils
 import ldap
 import service
 from ipaserver import ipaldap
+from ipaserver.install.dsinstance import realm_to_serverid
 from ipapython import sysrestore
 from ipapython import ipautil
 
@@ -222,6 +223,7 @@ class BindInstance(service.Service):
                              DOMAIN=self.domain,
                              HOST=self.host,
                              REALM=self.realm,
+                             SERVER_ID=realm_to_serverid(self.realm),
                              FORWARDERS=fwds,
                              SUFFIX=self.suffix,
                              OPTIONAL_NTP=optional_ntp)