[gnome-tweaks] appdata: Add provides tag for old metadata identifier

[Jeremy Bicha <jbicha src gnome org>]

commit c553730fda73574c52621f2dded11e54bf66ab4d
Author: Jeremy Bicha <jbicha ubuntu com>
Date:   Sat Feb 24 16:43:57 2018 -0500

    appdata: Add provides tag for old metadata identifier

 data/org.gnome.tweaks.appdata.xml.in | 3 +++
 1 file changed, 3 insertions(+)
---
diff --git a/data/org.gnome.tweaks.appdata.xml.in b/data/org.gnome.tweaks.appdata.xml.in
index 1d83872..80f8069 100644
--- a/data/org.gnome.tweaks.appdata.xml.in
+++ b/data/org.gnome.tweaks.appdata.xml.in
@@ -17,6 +17,9 @@
     manage startup applications, and enable desktop icons among other settings.
   </p>
   </description>
+  <provides>
+    <id>gnome-tweak-tool.desktop</id>
+  </provides>
   <kudos>
     <kudo>AppMenu</kudo>
     <kudo>HiDpiIcon</kudo>