[yelp] appdata: Set compulsory for GNOME

[Jeremy Bicha <jbicha src gnome org>]

commit 4f4ebad07243c7838bfcdd69e527b30ac8f90695
Author: Jeremy Bicha <jbicha ubuntu com>
Date:   Mon Apr 9 11:01:18 2018 -0400

    appdata: Set compulsory for GNOME
    
    This makes it unremovable in the GNOME Software app to prevent users from
    easily breaking their system

 data/yelp.appdata.xml.in |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)
---
diff --git a/data/yelp.appdata.xml.in b/data/yelp.appdata.xml.in
index b0cd073..604ab25 100644
--- a/data/yelp.appdata.xml.in
+++ b/data/yelp.appdata.xml.in
@@ -24,6 +24,8 @@
   </screenshots>
   <url type="homepage">https://wiki.gnome.org/Apps/Yelp</url>
   <updatecontact>gnome-doc-devel-list gnome org</updatecontact>
+  <project_group>GNOME</project_group>
+  <compulsory_for_desktop>GNOME</compulsory_for_desktop>
   <translation type="gettext">yelp</translation>
   <_developer_name>The GNOME Project</_developer_name>
 </application>