[gnome-builder] build: enable vala-pack by default

[Christian Hergert <chergert src gnome org>]

commit 99bd99e161c9ac83df54c538d917c43c7598072c
Author: Christian Hergert <chergert redhat com>
Date:   Wed Mar 18 14:23:56 2020 -0700

    build: enable vala-pack by default
    
    This is just python code now, fine to enable by default.

 meson_options.txt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/meson_options.txt b/meson_options.txt
index 1c95c02e0..496fbb6f1 100644
--- a/meson_options.txt
+++ b/meson_options.txt
@@ -73,7 +73,7 @@ option('plugin_sysprof', type: 'boolean')
 option('plugin_sysroot', type: 'boolean')
 option('plugin_todo', type: 'boolean')
 option('plugin_update_manager', type: 'boolean')
-option('plugin_vala', type: 'boolean', value: false)
+option('plugin_vala', type: 'boolean')
 option('plugin_vagrant', type: 'boolean', value: false)
 option('plugin_valgrind', type: 'boolean')
 option('plugin_waf', type: 'boolean')