Ensure that the Lubuntu session uses our Openbox config.

debian/changelog

@@ -1,6 +1,7 @@
 lubuntu-default-settings (1.2) UNRELEASED; urgency=medium
 
   * Move the contents of /etc/xdg/lubuntu/ to /etc/xdg/xdg-Lubuntu/.
+  * Ensure that the Lubuntu session uses our Openbox config.
 
  -- Simon Quigley <tsimonq2@ubuntu.com>  Thu, 17 May 2018 17:53:30 -0500
 

src/usr/share/xsessions/Lubuntu.desktop

@@ -1,5 +1,5 @@
 [Desktop Entry]
-Name=Lubuntu session
+Name=Lubuntu
 Comment=Lubuntu session using LXQt
-Exec=/usr/bin/startlxqt
+Exec=env LXQT_DEFAULT_OPENBOX_CONFIG="/etc/xdg/xdg-Lubuntu/openbox/lxqt-rc.xml" /usr/bin/startlxqt
 Type=Application