For injestion into a composed build, I'm adding some minor tweaks to
our build system:
- Teach DownloadFile task how to consume file:// URLs so we can pass
around artifacts using local sources.
- Add `SkipBuildingInstallers`, an MSBuild property that can be set
to true when installers (pkgs, msis, debs, rpms and the like) do
not need to be built.
- Add `IncludeAdditionalSharedFrameworks`, an MSBuild property that
can be set to prevent additional shared frameworks (i.e. shared
frameworks that the CLI does not use at runtime) from being
downloaded and included in our payload.
- Add `IncludeNuGetPackageArchive` an MSBuild property that can be
set to prevent the lzma archive containing all the nupkgs we
restore on first run from being included in the final output.
- Provide a way to change the Uri use for blob storage (so the
composed build and point at a local folder that looks like blob
storage to pick up artifacts from).
