replica-install: Fix --domain

Replica installation must not check existence of --domain - the domain
must (logically) exist.

https://fedorahosted.org/freeipa/ticket/6130

Reviewed-By: Jan Cholasta <jcholast@redhat.com>

ipaserver/install/server/common.py

@@ -284,11 +284,6 @@ class BaseServer(common.Installable, common.Interactive, core.Composite):
     @domain_name.validator
     def domain_name(self, value):
         validate_domain_name(value)
-        if (self.setup_dns and
-                not self.dns.allow_zone_overlap):  # pylint: disable=no-member
-            print("Checking DNS domain %s, please wait ..." % value)
-            check_zone_overlap(value, False)
-
 
     dm_password = Knob(
         str, None,

ipaserver/install/server/install.py

@@ -17,6 +17,7 @@ import six
 
 from ipapython import certmonger, ipaldap, ipautil, sysrestore
 from ipapython.dn import DN
+from ipapython.dnsutil import check_zone_overlap
 from ipapython.install import core
 from ipapython.install.common import step
 from ipapython.install.core import Knob
@@ -1199,13 +1200,20 @@ class ServerCA(BaseServerCA):
 
 
 class Server(BaseServer):
-    realm_name = Knob(BaseServer.realm_name)
-    domain_name = Knob(BaseServer.domain_name)
-
     setup_ca = None
     setup_kra = None
     setup_dns = Knob(BaseServer.setup_dns)
 
+    realm_name = Knob(BaseServer.realm_name)
+    domain_name = Knob(BaseServer.domain_name)
+
+    @domain_name.validator
+    def domain_name(self, value):
+        if (self.setup_dns and
+                not self.dns.allow_zone_overlap):  # pylint: disable=no-member
+            print("Checking DNS domain %s, please wait ..." % value)
+            check_zone_overlap(value, False)
+
     dm_password = Knob(
         BaseServer.dm_password,
         description="Directory Manager password",