Many tools in the SDK repo are producing packages

[ericstj]

Describe the bug

I wasn't sure if it was intentional or not, but many test projects in this repo are producing packages.

To Reproduce

Examine the build artifacts for a build and notice that many packages for test projects are produced.

Those seem to also be published to AzDo feeds.
https://dev.azure.com/dnceng/public/_artifacts/feed/dotnet9-transport

[marcpopMSFT]

This is expected. We produce our tests as .net tools to be used in the installer repo. The plan is to get rid of that once we have tests working in SDK post-repo merge.