lightdm: Add patch to avoid triggering home mounts.

As we have our homes on nfs, we don't want lightdm to search for icon
files in the homes.

Note, that the code, were lightdm enumerates the users and searches for
icon files in the users homess, is not used in the normal case. It is
only used when lightdm fails to get the service from accounts-service.

We've had the situation on one system, were accounts-service failed to
start in 30 seconds for unknown reassons after which gdm timed out and
used its own code, thereby mounting all nfs homes. Because of the notify
installed by the users filebrowser, these mounts even persisted.

It is yet unclear, why accounts-service needed ca 32 sesconds to start.
It was a special situation after a power failure on the campus which
resulted in a disconnect network in that building.

Anyway, if lightdm goes into the fallback mode for whatever reason, we
don't want it to walk over all homes.

Add patch.

lightdm.be0

@@ -1,11 +1,12 @@
 #!/usr/bin/env beesh
 
-# BEE_VERSION lightdm-1.30.0-1
+# BEE_VERSION lightdm-1.30.0-2
 
 # SRCURL[0]="https://github.com/CanonicalLtd/lightdm/releases/download/${PKGVERSION}/lightdm-${PKGVERSION}.tar.xz"
 SRCURL[0]="https://beehive.molgen.mpg.de/c566ea595f2b81e68684be9f8dbcbb42/lightdm-1.30.0.tar.xz"
 
-# PATCHURL+=()
+# PATCHURL+=(/src/mariux/patches/lightdm-faceoff.patch)
+PATCHURL+=("https://beehive.molgen.mpg.de/5fb001d7af859c412f471085f1e2e565/lightdm-faceoff.patch")
 
 # build_in_sourcedir