[gnome-control-center] flatpak: Move accountservice to meson

[Georges Basile Stavracas Neto <gbsneto src gnome org>]

commit ed245a9b33b10155a50c965a16ff774b9269131e
Author: Adrien Plazas <kekun plazas laposte net>
Date:   Wed Nov 7 13:22:45 2018 +0100

    flatpak: Move accountservice to meson
    
    Adapts to upstream changes, as the Autotools are not offered anymore.

 build-aux/flatpak/org.gnome.Settings.json | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)
---
diff --git a/build-aux/flatpak/org.gnome.Settings.json b/build-aux/flatpak/org.gnome.Settings.json
index 2a8e2416b..767987de2 100644
--- a/build-aux/flatpak/org.gnome.Settings.json
+++ b/build-aux/flatpak/org.gnome.Settings.json
@@ -110,10 +110,14 @@
         },
         {
             "name" : "accountservice",
-            "buildsystem" : "autotools",
+            "buildsystem" : "meson",
             "config-opts" : [
-                "--disable-systemd",
-                "--disable-elogind"
+                "-Ddocbook=false",
+                "-Delogind=false",
+                "-Dgtk_doc=false",
+                "-Dintrospection=false",
+                "-Dsystemd=false",
+                "-Dsystemdsystemunitdir=no"
             ],
             "sources" : [
                 {