[darc/maestro++] Feed cleaner service needs to handle symbol packages better

[riarenas]

• This issue is blocking
• This issue is causing unreasonable pain

The feed cleaner service's logs are filled with statements like:

Unable to find asset runtime.linux-musl-arm64.Microsoft.NETCore.DotNetHostPolicy.3.1.3 in feed darc-pub-sym-dotnet-core-setup-644ff0fb in BAR. Unable to determine if it was released or update its locations.

Which means we're not cleaning up the stable symbol package feeds.

This is happening because we look for the BAR asset with a matching name to have the stable feed that we're attempting to clean up in the asset locations, but we never write the symbol feeds to the locations.

When looking up the asset, we can simply look for both the normal, and symbol feeds.

CC @mmitche @JohnTortugo @epananth

[mmitche]

@riarenas I think the solution here might be simply to stop pushing the symbol packages to the azdo feeds? :D

[riarenas]

That would make me even happier if we can do it! but we probably still need to tweak the cleaner, or maybe just wholesale delete all the stable symbol feeds after a bit?

[mmitche]

Yep. The only requirements are that:

1. We put the symbol packages somewhere
2. The location is compatible with the need for internal builds
3. The location is compatible with the need for stable builds (e.g. upload to a suffixed dir)