Use lxqt-sudo instead of pkexec as switch user command.

Summary: pcmanfm in Lubuntu used gksu. When we switched to lxqt, it had been deprecated, so we used pkexec. Unfortunately, pkexec just flat out fails. Looking upstream, they use lxqt-sudo, which we have in our install, so going with their default instead.

Test Plan:
 1. Open pcmanfm-qt
 2. Click on "Tools" in the menu
 3. Click on "Open as root"

Should get an lxqt-sudo dialog asking for a password.

Reviewers: tsimonq2

Reviewed By: tsimonq2

Differential Revision: https://phab.lubuntu.me/D7

debian/changelog

@@ -1,3 +1,9 @@
+lubuntu-default-settings (1.10) cosmic; urgency=medium
+
+  * Use lxqt-sudo instead of pkexec as switch user command. 
+
+ -- Walter Lapchynski <wxl@ubuntu.com>  Thu, 16 Aug 2018 23:14:55 -0700
+
 lubuntu-default-settings (1.9) cosmic; urgency=medium
 
   [ Simon Quigley ]

debian/patches/lxqt-sudo-as-sucommand.patch

@@ -0,0 +1,12 @@
+Description: Use lxqt-sudo instead of pkexec as switch user command. 
+Author: Walter Lapchynski <wxl@ubuntu.com> 
+--- a/src/etc/xdg/xdg-Lubuntu/pcmanfm-qt/lxqt/settings.conf
++++ b/src/etc/xdg/xdg-Lubuntu/pcmanfm-qt/lxqt/settings.conf
+@@ -1,6 +1,6 @@
+ [System]
+ IconThemeName=Lubuntu
+-SuCommand=pkexec %s
++SuCommand=lxqt-sudo %s
+ Terminal=qterminal
+ TerminalDirCommand=qterminal
+ TerminalExecCommand=qterminal -e %s

debian/patches/series

@@ -1 +1,2 @@
+lxqt-sudo-as-sucommand.patch
 qterminal-window-size.patch