[gvfs] build: Add dbus.service.in to distributable files

[Iñigo Martínez <inigomartinez src gnome org>]

commit 192a38c353ed52daabdc409a7fd052d231b156d1
Author: Iñigo Martínez <inigomartinez gmail com>
Date:   Mon Nov 13 13:08:13 2017 +0100

    build: Add dbus.service.in to distributable files
    
    dbus.service.in file, which is used as a template for D-Bus service
    files generation, is missing from the distributable file list in
    autotools.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=786149

 Makefile.am |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)
---
diff --git a/Makefile.am b/Makefile.am
index bc6410e..b18a263 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -30,6 +30,7 @@ EXTRA_DIST = \
        meson.build             \
        meson_options.txt       \
        meson_post_install.py   \
+       dbus.service.in         \
        po/meson.build          \
        $(NULL)