Dustin L. Howett cbe915c554
Add support for ARM64 testing, reintroduce it in CI (#15761)
This pull request introduces the arm64 testing agents and a few build
phases to use them.

In addition to running the ARM64 tests in CI, it makes the following
changes:

- The x64 tests now run on equivalent x64 testing agents
- We now run ARM64 builds (and tests!) on all pull requests
- I've deduplicated a lot of the build and test stages
- New queue-time parameters have been added to control various phases,
  for quick pipeline testing
- A bunch of conditions have been promoted to compile-time checks to
  control the existence of stages and steps more tightly
2023-07-26 16:22:18 -07:00
..
2022-01-21 18:24:06 +00:00