Fix ldapupdate.get_sub_dict() for missing named user

The named user may not be present when ipa-server-dns and bind are not
installed. NAMED_UID and NAMED_GID constants are only used with local
DNS support.

Fixes: https://pagure.io/freeipa/issue/8936
Signed-off-by: Christian Heimes <cheimes@redhat.com>
Co-authored-by: François Cami <fcami@redhat.com>
Reviewed-By: Francois Cami <fcami@redhat.com>
Reviewed-By: Rob Crittenden <rcritten@redhat.com>
Reviewed-By: Francois Cami <fcami@redhat.com>
Reviewed-By: Rob Crittenden <rcritten@redhat.com>

ipatests/prci_definitions/nightly_ipa-4-9_latest.yaml

@@ -547,6 +547,18 @@ jobs:
         timeout: 4800
         topology: *master_1repl_1client
 
+  fedora-latest-ipa-4-9/test_installation_TestInstallWithoutNamed:
+    requires: [fedora-latest-ipa-4-9/build]
+    priority: 50
+    job:
+      class: RunPytest
+      args:
+        build_url: '{fedora-latest-ipa-4-9/build_url}'
+        test_suite: test_integration/test_installation.py::TestInstallWithoutNamed
+        template: *ci-ipa-4-9-latest
+        timeout: 4800
+        topology: *master_1repl
+
   fedora-latest-ipa-4-9/test_idviews:
     requires: [fedora-latest-ipa-4-9/build]
     priority: 50

ipatests/prci_definitions/nightly_ipa-4-9_previous.yaml

@@ -547,6 +547,18 @@ jobs:
         timeout: 4800
         topology: *master_1repl_1client
 
+  fedora-previous-ipa-4-9/test_installation_TestInstallWithoutNamed:
+    requires: [fedora-previous-ipa-4-9/build]
+    priority: 50
+    job:
+      class: RunPytest
+      args:
+        build_url: '{fedora-previous-ipa-4-9/build_url}'
+        test_suite: test_integration/test_installation.py::TestInstallWithoutNamed
+        template: *ci-ipa-4-9-previous
+        timeout: 4800
+        topology: *master_1repl
+
   fedora-previous-ipa-4-9/test_idviews:
     requires: [fedora-previous-ipa-4-9/build]
     priority: 50

ipatests/test_integration/test_installation.py

@@ -1853,3 +1853,30 @@ class TestInstallWithoutSudo(IntegrationTest):
         result = tasks.install_client(self.master, self.clients[0])
         assert self.no_sudo_str not in result.stderr_text
         assert self.sudo_version_str not in result.stdout_text
+
+
+class TestInstallWithoutNamed(IntegrationTest):
+    num_replicas = 1
+
+    @classmethod
+    def remove_named(cls, host):
+        # remove the bind package and make sure the named user does not exist.
+        # https://pagure.io/freeipa/issue/8936
+        result = host.run_command(['id', 'named'], raiseonerr=False)
+        if result.returncode == 0:
+            tasks.uninstall_packages(host, ['bind'])
+            host.run_command(['userdel', constants.NAMED_USER])
+        assert host.run_command(
+            ['id', 'named'], raiseonerr=False
+        ).returncode == 1
+
+    @classmethod
+    def install(cls, mh):
+        for tgt in (cls.master, cls.replicas[0]):
+            cls.remove_named(tgt)
+        tasks.install_master(cls.master, setup_dns=False)
+
+    def test_replica0_install(self):
+        tasks.install_replica(
+            self.master, self.replicas[0], setup_ca=False, setup_dns=False
+        )