[test] Add cpu microbenchmarks to the test library

[jjotero]

Ported the stream, strided_bandwidth, dgemm and latency checks to the hpctestlib library.

This PR also extends the cscs.py config file to support the PrgEnv-fujitsu on the above microbenchmarks.

For now, I have ported the tests as they were before keeping the performance metrics are the same. However, these could all be flexible tests, and some of them report the performance on a per-node basis and others don't. We should establish a convention to have them all do the same thing.

[pep8speaks]

Hello @jjotero, Thank you for updating!

Cheers! There are no PEP8 issues in this Pull Request!Do see the ReFrame Coding Style Guide

Comment last updated at 2021-10-28 16:08:31 UTC

[codecov-commenter]

Codecov Report

Merging #1996 (918c14d) into master (acebf01) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #1996   +/-   ##
=======================================
  Coverage   87.61%   87.61%           
=======================================
  Files          50       50           
  Lines        8788     8788           
=======================================
  Hits         7700     7700           
  Misses       1088     1088           

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update acebf01...918c14d. Read the comment docs.

[vkarak]

This still needs substantial work, so I'm closing the PR due to time constraints. It will be added to the library at a later time.