[gnome-build-meta] gnome-shell.bst: disable bash completion

[Michael Catanzaro <mcatanzaro src gnome org>]

commit edb3bee038b95f8b5bd3ca9d76e8dcdf9c6b62ff
Author: Michael Catanzaro <mcatanzaro gnome org>
Date:   Mon Mar 23 10:09:25 2020 -0500

    gnome-shell.bst: disable bash completion
    
    This is untested because buildstream seems to be broken in F32

 elements/core/gnome-shell.bst | 4 ++++
 1 file changed, 4 insertions(+)
---
diff --git a/elements/core/gnome-shell.bst b/elements/core/gnome-shell.bst
index 3985d01b..d00d7b92 100644
--- a/elements/core/gnome-shell.bst
+++ b/elements/core/gnome-shell.bst
@@ -42,3 +42,7 @@ depends:
 - sdk/libsoup.bst
 - freedesktop-sdk.bst:components/gstreamer.bst
 - freedesktop-sdk.bst:bootstrap-import.bst
+
+variables:
+  meson-local: >-
+    -Dbash_completion=disabled