Weston client failure when starting app over ssh

[zoltan-ongithub]

Issue: Starting any weston client app over ssh causes a failure (no display found).

Note: It seems that the "wayland-0" socket file is not created at startup in the /var/run/user/0/ folder. Needs to be verified, but this may be an issue on all meta-96boards builds.

Workaround:

$ systemctl restart weston