Ship /var/run -> /run by default

Let's ship the /var/run -> /run symlink by default in the base image to paper over bugs like the below.

Original issue below:

---

Is it better to open these issues under the packages somewhere else? I'll open it here just so we don't loose it.

I noticed today that gssproxy.service won't start and this one takes a while to timeout and really slows down the boot process. (This happens with SELinux in permissive mode)

Oct 17 16:38:31 systemd[1]: Starting gssproxy.service - GSSAPI Proxy Daemon...
Oct 17 16:38:31 systemd[1]: gssproxy.service: Can't open PID file /run/gssproxy.pid (yet?) after start: No such file or directory
Oct 17 16:39:16 systemd[1]: gssproxy.service: start operation timed out. Terminating.
Oct 17 16:39:16 systemd[1]: gssproxy.service: Failed with result 'timeout'.
Oct 17 16:39:16 systemd[1]: Failed to start gssproxy.service - GSSAPI Proxy Daemon.