Update 8.6-to-8.7.md

doc/update/8.6-to-8.7.md

@@ -128,6 +128,10 @@ Ensure you're still up-to-date with the latest init script changes:
 
     sudo cp lib/support/init.d/gitlab /etc/init.d/gitlab
     
+For Ubuntu 16.04.1 LTS:
+
+    sudo systemctl daemon-reload
+
 ### 8. Start application
 
     sudo service gitlab start