[develop] Test performance of DAG pipeline.

[scottarnette]

Change Description

This adjusts build/test steps in the EOSIO pinned/unpinned pipelines to use pipeline step dependencies for test executions instead of explicit waits.

• This means that tests for a specific platform begin executing once the build for that platform has completed, instead of waiting on all builds to complete.
• While this doesn't improve total build time since every build is guaranteed that it must wait for a MacOS agent at some point, it does allow for faster feedback on Linux-based test steps while one waits for MacOS agents to run build/test steps.

Change Type

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• [ ] Documentation

• [ ] Stability bug fix

• [ ] Other

• [ ] Other - special case

Testing Changes

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• [ ] New Tests

• [ ] Existing Tests

• [ ] Test Framework

• [ ] CI System

• [ ] Other

Consensus Changes

• [ ] Consensus Changes

API Changes

• [ ] API Changes

Documentation Additions

• [ ] Documentation Additions