Discover updates for spack-stack 2.1

[ashley314]

Description

Updates needed to build spack-stack 2.1.0 on discover.

Includes ecflow requirement for ewok-env

Dependencies

None

Issues addressed

Add any issues here that this PR closes or is related to. Use "Resolves" or "Closes" to automatically close issues when the PR is merged. Using "Working towards" or "Related to" for other cases.

Applications affected

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Systems affected

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Testing

• CI: Note whether the automatic tests (GitHub actions tests that run automatically for every commit) pass or not
  • GitHub actions CI tests pass
  • GitHub actions CI tests do not pass (provide explanation)
  • GitHub actions CI tests skipped (provide explanation if necessary)
• New tests added: List and describe any new tests added to GitHub actions
  • ...
• Additional testing: Add information on any additional tests conducted
  • ...

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.
• All necessary updates to the documentation (spack-stack wiki) will be made when this PR is merged

[ashley314]

Updated for gcc, working on oneapi now