suppress-logout-restart-shutdown setting does not work from unity-greeter, i.e. when logged out

[Holger Hellmuth]

I did "gsettings set com.canonical.indicator.session suppress-logout-restart-shutdown true" in Ubuntu 16.04.1 LTS

Then tried to shutdown the PC (by pressing the power-button or in the indicator-session) while logged-out. I expected an immediate shutdown without a menue showing. Instead the restart-shutdown selection menue (without the logout option as I was logged out) still came up.

When I was logged in, shutdown worked without menue as expected but logout still showed the menue

indicator.session version is 12.10.5+16.04.20160412-0ubuntu1

ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: indicator-session 12.10.5+16.04.20160412-0ubuntu1
ProcVersionSignature: Ubuntu 4.4.0-45.66-generic 4.4.21
Uname: Linux 4.4.0-45-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
Date: Mon Oct 31 19:45:11 2016
InstallationDate: Installed on 2015-08-21 (437 days ago)
InstallationMedia: Ubuntu 15.04 "Vivid Vervet" - Release amd64 (20150422)
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=de_DE.UTF-8
 SHELL=/bin/bash
SourcePackage: indicator-session
UpgradeStatus: Upgraded to xenial on 2016-07-25 (97 days ago)