Updated nightly test scripts

[prckent]

Proposed changes

Current versions including preliminary support of OpenMP offload builds with LLVM development compiler. CUDA builds are renamed Legacy-CUDA.

What type(s) of changes does this code introduce?

• New feature
• Build related changes
• Testing changes (e.g. new unit/integration/performance tests)

Does this introduce a breaking change?

• No

What systems has this change been tested on?

nitrogen. Apart from the new offload build these versions have been in production since 10 February. Scipts use spack develop from that date.

Checklist

• Yes. This PR is up to date with current the current state of 'develop'
• NA. Code added or changed in the PR has been clang-formatted
• NA. This PR adds tests to cover any new code, or to catch a bug that is being fixed
• NA. Documentation has been added (if appropriate)

[ye-luo]

Please delete all oxygen files and update the branch.

yeluo@ryzen-box:~/opt/qmcpack/tests/test_automation$ ls *oxygen*
Jenkinsfile_ornl_oxygen_cpu          jenkins_oxygen_cpu.sh         ornl_oxygen_spack_env_enable_cuda.sh
Jenkinsfile_ornl_oxygen_enable_cuda  jenkins_oxygen_cuda.sh        ornl_oxygen_spack_env_gpu.sh
Jenkinsfile_ornl_oxygen_gpu          jenkins_oxygen_gpu.sh

[prckent]

I was waiting for input. Keeping the coverage script since this will need to be reactivated.

[ye-luo]

Okay to test

[ye-luo]

Test this please