[gnome-settings-daemon] dummy: Add missing test-dummy.c source

[Bastien Nocera <hadess src gnome org>]

commit 70e90f817bff29eedd3d649460048404cfcf66f1
Author: Bastien Nocera <hadess hadess net>
Date:   Wed Oct 5 14:26:09 2016 +0200

    dummy: Add missing test-dummy.c source
    
    https://bugzilla.gnome.org/show_bug.cgi?id=741688#c67

 plugins/dummy/test-dummy.c |    7 +++++++
 1 files changed, 7 insertions(+), 0 deletions(-)
---
diff --git a/plugins/dummy/test-dummy.c b/plugins/dummy/test-dummy.c
new file mode 100644
index 0000000..beb40fa
--- /dev/null
+++ b/plugins/dummy/test-dummy.c
@@ -0,0 +1,7 @@
+#define NEW gsd_dummy_manager_new
+#define START gsd_dummy_manager_start
+#define STOP gsd_dummy_manager_stop
+#define MANAGER GsdDummyManager
+#include "gsd-dummy-manager.h"
+
+#include "test-plugin.h"