* Remove references to PlatformAbstractions.
This will allow us to remove the PlatformAbstractions library from dotnet/runtime.
Contributes to https://github.com/dotnet/runtime/issues/3470
We were bumping targeting pack, framework-dependent default
runtime version, and self-contained default (latest) runtime
version in unison. This only works for previews where these
versions are all the same always. Now that we're servicing 3.0,
we:
1. Pin targeting packs to 3.0.0
2. Fix default framework-dependent runtime version at 3.0.0
This change also:
* Removes dependencies on legacy/internal netcoreapp packages. We
now use Microsoft.NETCore.App.Internal version exclusively to
calculate the blob storage path for core-setup.
* Uses PackageDownload for all templates, including
latest. PackageReference had been used for latest only because
it hid another bug with the netcoreapp reference of
redist.csproj that is fixed here. That reference is now a
FrameworkReference as it should be.
* Removes a bunch of shenanigans from
GenerateBundledVersions.props that were causing issues with
above. One casualty of that is that we hard code the RID lists
for runtime pack, which I don't think is too bad, and actually
will make it easier to merge in source build patches.
* Cleans up how runtime and targeting pack versions are
referenced throughout, removing incorrect assumptions about
them being the same.
* Incorporates a prior closed PR to use suffixed version for blob
storage, even when assets coming from blob storage are
stabilized. It needed changes to merge with this.
Note:
* A similar theoretical servicing issue exists for the versions
of apphost, hostfxr, shared host, which are still assumed to be
the same as the runtime version in several places. If we choose
to service those independently, more work is required.
* There will be a 3.0.1 ASP.NET targeting pack, and so we will
have to unpin that once it is ready. This change establishes
the baseline of all targeting packs being pinnned, and they can
be unpinned in the (hopefully rare) cases where they need to be
serviced.
