Fix Users for weston service

Change-Id: I546619f71fccb711821b356c2817a0785c5bf425
diff --git a/debian/lib/systemd/system/weston.service b/debian/lib/systemd/system/weston.service
index 1adcd05..01057b4 100644
--- a/debian/lib/systemd/system/weston.service
+++ b/debian/lib/systemd/system/weston.service
@@ -5,8 +5,8 @@
 After=systemd-user-sessions.service getty@tty7.service plymouth-quit-wait.service
 
 [Service]
-User=aiy
-WorkingDirectory=/home/aiy
+User=mendel
+WorkingDirectory=/home/mendel
 PermissionsStartOnly=true
 Restart=always