Run ORNL OpenSHMEM Benchmarks

[jdinan]

Run OSB in testing, details below:

The ORNL OpenSHMEM Team is pleased to announce the public beta release of Oak Ridge openSHMEM Benchmarks (OSB). https://github.com/ornl-languages/osb/releases

The benchmark suite includes the following benchmarks.

1. Graph 500 (Single and Multithreaded)
2. SSCA1 (Single and Multithreaded)
3. GUPs (Single, Multithreaded / Contexts)
4. NAS
5. SHOMS

The OpenSHMEM versions of Graph 500, NAS, and GUPs benchmarks were adapted from the MPI versions and we would like to thank and acknowledge the contribution of original authors.