[Template] Fixed auto_client bug

Author: nemesifier

openwisp_controller/config/models.py

@@ -142,6 +142,7 @@ class Meta(AbstractTemplate.Meta):
 
     def clean(self):
         self._validate_org_relation('vpn')
+        super(Template, self).clean()
 
 
 class Vpn(ShareableOrgMixin, AbstractVpn):

openwisp_controller/config/tests/test_template.py

@@ -70,3 +70,15 @@ def test_org_default_shared_template(self):
         self.assertEqual(c1.templates.count(), 2)
         self.assertEqual(c1.templates.filter(name='t1').count(), 1)
         self.assertEqual(c1.templates.filter(name='t2').count(), 1)
+
+    def test_auto_client_template(self):
+        org = self._create_org()
+        vpn = self._create_vpn(organization=org)
+        t = self._create_template(name='autoclient',
+                                  organization=org,
+                                  type='vpn',
+                                  auto_cert=True,
+                                  vpn=vpn,
+                                  config={})
+        control = t.vpn.auto_client()
+        self.assertDictEqual(t.config, control)