Update lulesh prediff for slurm ugni configuration.

When running lulesh tests with slurm launcher, ugni comm, and muxed tasks the following error shows
up in addition to the regular non-zero exit code error:

```
slurmstepd: Terminating job step 113904.0; task 0 exit code 1 exited without notification
```

This updates the prediff to filter this message, too.

I tested that the lulesh tests pass on my mac as well as on an XC with the configuration that this error
shows up in.