[gnome-usage/tracker-powered-storage-view-wip] CI: Fix flatpak tracker dependency

[Petr Štětka <pstetka src gnome org>]

commit a477cb40131c44619b6a4e87c7c4af910952e1fa
Author: Petr Štětka <pstetka redhat com>
Date:   Tue Apr 2 14:58:01 2019 +0200

    CI: Fix flatpak tracker dependency

 org.gnome.Usage.json | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/org.gnome.Usage.json b/org.gnome.Usage.json
index d9d9d7f..2a75bf6 100644
--- a/org.gnome.Usage.json
+++ b/org.gnome.Usage.json
@@ -29,6 +29,7 @@
     "modules": [
         {
             "name": "tracker",
+            "buildsystem": "meson",
             "cleanup": [ "/bin", "/etc", "/libexec" ],
             "config-opts": [ "--disable-miner-apps", "--disable-static",
                              "--disable-tracker-extract", "--disable-tracker-needle",