Trying to fix CVLFAB-720, but unfortunately, I'm having
trouble testing this now, because CVLFAB-687 / CVLFAB-679
(or something similar) has resurfaced - I am being allocated
cvldesktop4 from the pool, and the GNOME startup is sufficiently
slow to trigger the problem where having home-directory sharing
turned on results in a huge number of Nautilus File Browser
windows being opened.
A small change to the nautilus command-line arguments, for displaying
the WebDAV share in the remote file browser.  This may help with CVLFAB-687.
But the real fix seems to be changing
/usr/share/applications/gnome-nautilus.desktop, and removing or
commenting out the following:

X-GNOME-AutoRestart=true

It may also help to remove or comment out these lines too:

StartupNotify=true
X-GNOME-Autostart-Phase=Desktop
X-GNOME-Autostart-Notify=true

For now, I just copied /usr/share/applications/gnome-nautilus.desktop
into my ~/.local/share/applications/ and edited my local copy to
apply the changes to a single user (myself).

I'm testing this against cvldesktop4 (which is the VM I keep getting
allocated from the pool, and it is slow enough to start up to trigger
the multiple-Nautilus-windows bug).