BranchActivity: show related host for services

fixes #2736

doc/82-Changelog.md

@@ -14,6 +14,7 @@ This version hasn't been released yet
 * FEATURE: Data Fields are now sorted in a case-insensitive way (#2358)
 * FEATURE: Deployment Log now breaks lines (#2677)
 * FEATURE: Sort Template trees by name (#2691)
+* FEATURE: Branch and Sync diff/preview now shows related host for services (#2736)
 * FIX: do not fail for (some) Service Dependencies (#2669, #1142)
 
 ### Icinga Configuration

library/Director/Db/Branch/BranchActivity.php

@@ -294,7 +294,13 @@ class BranchActivity
      */
     public function getObjectName()
     {
-        return $this->getProperty('object_name', 'unknown object name');
+        if ($this->objectTable === BranchSupport::TABLE_ICINGA_SERVICE && $host = $this->getProperty('host')) {
+            $suffix = " ($host)";
+        } else {
+            $suffix = '';
+        }
+
+        return $this->getProperty('object_name', 'unknown object name') . $suffix;
     }
 
     /**