Permit external HostGroups

refs #384
fixes #748

application/forms/IcingaHostForm.php

@@ -224,7 +224,10 @@ class IcingaHostForm extends DirectorObjectForm
                 'name'    => 'object_name',
                 'display' => 'COALESCE(display_name, object_name)'
             )
-        )->where('object_type = ?', 'object')->order('display');
+        )->where(
+            'object_type IN (?)',
+            array('object', 'external_object')
+        )->order('display');
 
         return $db->fetchPairs($select);
     }

schema/mysql-migrations/upgrade_130.sql

@@ -0,0 +1,6 @@
+ALTER TABLE icinga_hostgroup
+  MODIFY object_type enum('object', 'template', 'external_object') NOT NULL;
+
+INSERT INTO director_schema_migration
+(schema_version, migration_time)
+VALUES (130, NOW());

schema/mysql.sql

@@ -730,7 +730,7 @@ CREATE TABLE icinga_service_set_var (
 CREATE TABLE icinga_hostgroup (
   id INT(10) UNSIGNED AUTO_INCREMENT NOT NULL,
   object_name VARCHAR(255) NOT NULL,
-  object_type ENUM('object', 'template') NOT NULL,
+  object_type ENUM('object', 'template', 'external_object') NOT NULL,
   disabled ENUM('y', 'n') NOT NULL DEFAULT 'n',
   display_name VARCHAR(255) DEFAULT NULL,
   assign_filter TEXT DEFAULT NULL,
@@ -1508,4 +1508,4 @@ CREATE TABLE icinga_user_resolved_var (
 
 INSERT INTO director_schema_migration
   (schema_version, migration_time)
-  VALUES (129, NOW());
+  VALUES (130, NOW());