ci: disable power9, add a100 and roci jobs

[rbberger]

PR Summary

Closes #347

PR Checklist

• [ ] Adds a test for any bugs fixed. Adds tests for new features.
• [ ] Format your changes by using the make format command after configuring with cmake.
• [ ] Document any new features, update documentation for changes made.
• [ ] Make sure the copyright notice on any files you modified is up to date.
• [ ] After creating a pull request, note it in the CHANGELOG.md file.
• [ ] LANL employees: make sure tests pass both on the github CI and on the Darwin CI

If preparing for a new release, in addition please check the following:

• [ ] Update the version in cmake.
• [ ] Move the changes in the CHANGELOG.md file under a new header for the new release, and reset the categories.

[rbberger]

@Yurlungur this is now ready. The CI on one of the Rocinante jobs still fails due to some HDF5 issue, but I think this is beyond the scope of this MR which already packs a lot of changes.

[rbberger]

@ktsai7 in particular should look at the different jobs that are still rebuilding various spack packages.

[ktsai7]

@rbberger I will take a look at the packages. @Yurlungur If this is working, I would say to get it in. I am making rounds adding some CI stuff, but that won't conflict with this.