Fix CI tests on R&D ParallelCluster

[climbfuji]

Summary

This is more of a workaround than a good solution. By looping over the two compilers, reconcretizing and installing, I can get around the concretizer problems that are described in #939.

I tested this manually on AWS ParallelCluster. Since it runs via workflow_dispatch, I can't run the CI tests from my fork/branch. We'll have to merge and check afterwards if it works.

Testing

See above

Applications affected

None

Systems affected

AWS ParallelCluster CI runs only

Dependencies

none

Issue(s) addressed

Resolves #939

Checklist

• This PR addresses one issue/problem/enhancement, or has a very good reason for not doing so.
• These changes have been tested on the affected systems and applications.
• All dependency PRs/issues have been resolved and this PR can be merged.

[srherbener]

I think the code looks good. It seems to be capturing what should have been run before this update. I guess we will see with the testing. Thanks!

[AlexanderRichert-NOAA]

If it runs and works then this is fine. Would it make sense to use strategy:matrix:... to avoid all the indentation, and also allow gcc and intel to run in parallel? I have no problem with the current approach though.

[climbfuji]

If it runs and works then this is fine. Would it make sense to use strategy:matrix:... to avoid all the indentation, and also allow gcc and intel to run in parallel? I have no problem with the current approach though.

That's a good idea. I'll make this change in a follow-up PR. That will also provide a chance to fix issues that we can only find out by merging this PR.