config: Move default UDS addresses to /var/run/ptp. /var/run is normally not writable for non-root users. Move the default server UDS and CMLDS addresses to /var/run/ptp, which will be created by ptp4l the first time it runs if it does not exist. This makes the default work well in both cases when the linuxptp programs are running under root and non-root user. Signed-off-by: Miroslav Lichvar <mlichvar@redhat.com> Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>