Update ImageBuilder commands that use Service Principal authentication

[lbussell]

Commands that need to be updated:

• [x] CopyImages
  • [x] https://github.com/dotnet/docker-tools/pull/1261
  • [x] https://github.com/dotnet/docker-tools/pull/1260
• [ ] Build
• [ ] CleanAcrImages
• [ ] IngestKustoImageInfo
• [ ] WaitForMcrDocIngestion
• [ ] WaitForMcrImageIngestionOptions

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[lbussell]

These are all completed and there are now some successful pipeline runs in this repo as well as dotnet-docker that don't use service principal creds directly.