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- to pick up latest progress mode updates

- the purpose is to test the new wait_fd capability in verbs;ofi_rxm

- previous patch to work around bad interaction with bash scripts was no
  longer working

this change has been upstreamed in spack

- also switch to startup allocation on lcrc for now

- will open PR for spack for long term fix

- use local pwd for tmp files (easier cleanup in CI environments)
- manually generate repos.yaml without perturbing ~/.spack
- copy packages.yaml into place without perturbing ~/.spack

- fix bug in previous tmp dir settings
- auto generate repos.yaml to avoid polluting ~/.spack

- will be easier to clean up in jenkens/ci environments

- this is safer for use in environments like continuous integration where we don't want to
  perturb any persistent configuration

- better packages.yaml example to leverage existing modules
- use sds-tests instead of ssg benchmarks