[gdm] Launch systemd service with KeyringMode=shared

[Michael Catanzaro <mcatanzaro src gnome org>]

commit 762b312bb98d31bd036fbcc8d61e53d5b1298d65
Author: Michael Catanzaro <mcatanzaro posteo net>
Date:   Mon Nov 5 18:31:35 2018 +0000

    Launch systemd service with KeyringMode=shared
    
    This allows gdm to pass the LUKS password through to PAM.
    
    The login keyring will now be unlocked automatically if autologin is enabled!

 data/gdm.service.in | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
---
diff --git a/data/gdm.service.in b/data/gdm.service.in
index 72201c1f..377e20a8 100644
--- a/data/gdm.service.in
+++ b/data/gdm.service.in
@@ -28,7 +28,8 @@ BusName=org.gnome.DisplayManager
 StandardOutput=syslog
 StandardError=inherit
 EnvironmentFile=-@LANG_CONFIG_FILE@
-ExecReload=/bin/kill -SIGHUP $MAINPID
+ExecReload=/bin/kill -SIGHUP $MAINPI
+KeyringMode=shared
 
 [Install]
 Alias=display-manager.service