[gedit/gnome-3-34] snap: Stage python3, required for some plugins

[Ken VanDine <kvandine src gnome org>]

commit 79684bc8dd5f0a487d821796509184102744119f
Author: Ken VanDine <ken vandine canonical com>
Date:   Tue Dec 10 11:51:35 2019 -0500

    snap: Stage python3, required for some plugins

 snap/snapcraft.yaml | 5 +++++
 1 file changed, 5 insertions(+)
---
diff --git a/snap/snapcraft.yaml b/snap/snapcraft.yaml
index b143c3303..505479057 100644
--- a/snap/snapcraft.yaml
+++ b/snap/snapcraft.yaml
@@ -157,6 +157,11 @@ parts:
       - python-dbus-dev
       - python-gi-dev
       - yelp-tools
+    stage-packages:
+      - python3
+      - python3-dbus
+      - python3-gi
+      - python3-setuptools
 # Zeitgeist plugin isn't as useful in a Snap.
     stage:
       - -usr/lib/gedit/plugins/libzeitgeist.so