Presently MagenticOne and the m1 CLI use the LocalCommandLineExecutor
(presumably copied from the agbench code, which already runs in Docker).
This pr defaults m1 to Docker, and adds a code_executor parameter to
MagenticOne, which defaults to local for now to maintain backward
compatibility -- but this behavior is immediately deprecated.
* use caching to run tests and report coverage
* fix test step dep name
* try to fix cov fname
* add working dir to mv step
* update artifact download
* fmt
* reduce concurrency on ext test
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Co-authored-by: Leonardo Pinheiro <lpinheiro@microsoft.com>
