[release/6.0] Use generated runtime.json when building shared framework packages (backport of #76068)

[ayakael]

Backport of #76068

Per @tmds

Fixes https://github.com/dotnet/runtime/issues/53550
Based on https://github.com/dotnet/runtime/pull/69455
With this change, when I build:
./build.sh /p:DotnetBuildFromSource=true /p:AdditionalRuntimeIdentifiers=fedora.45-x64
The new rid shows up in the packages:
artifacts/obj/Microsoft.NETCore.App.Bundle/Debug/net7.0/linux-x64/output/shared/Microsoft.NETCore.App/8.0.0-dev/Microsoft.NETCore.App.deps.json: "fedora.45-x64": [
artifacts/obj/Microsoft.NETCore.App.Composite.Bundle/Debug/net7.0/linux-x64/output/shared/Microsoft.NETCore.App/8.0.0-dev/Microsoft.NETCore.App.deps.json: "fedora.45-x64": [
artifacts/obj/Microsoft.NETCore.App.Runtime.Composite/Debug/net7.0/linux-x64/Microsoft.NETCore.App.deps.json: "fedora.45-x64": [
artifacts/obj/Microsoft.NETCore.App.Runtime.Composite/Debug/net7.0/linux-x64/output/shared/Microsoft.NETCore.App/8.0.0-dev/Microsoft.NETCore.App.deps.json: "fedora.45-x64": [
artifacts/obj/Microsoft.NETCore.App.Runtime/Debug/net7.0/linux-x64/Microsoft.NETCore.App.deps.json: "fedora.45-x64": [
artifacts/obj/Microsoft.NETCore.App.Runtime/Debug/net7.0/linux-x64/output/shared/Microsoft.NETCore.App/8.0.0-dev/Microsoft.NETCore.App.deps.json: "fedora.45-x64": [
artifacts/bin/Microsoft.NETCore.Platforms/Debug/runtime.json: "fedora.45-x64": {

Customer impact

Allows for proper fllow of additional runtime identifiers, allowing builds on yet-to-be-introduced RIDs to pass

Testing

• unit tests in ci
• source-build build within Alpine environment passes
• Installer backport: [release/6.0.1xx] Eliminate runtime portable build installer#14816

Risk

Low, as it is more relevant to source-build

[ghost]

Tagging subscribers to this area: @dotnet/area-infrastructure-libraries
See info in area-owners.md if you want to be subscribed.

Issue Details

---

Backport of #76068

Per @tmds

Fixes https://github.com/dotnet/runtime/issues/53550
Based on https://github.com/dotnet/runtime/pull/69455
With this change, when I build:
./build.sh /p:DotnetBuildFromSource=true /p:AdditionalRuntimeIdentifiers=fedora.45-x64
The new rid shows up in the packages:
artifacts/obj/Microsoft.NETCore.App.Bundle/Debug/net7.0/linux-x64/output/shared/Microsoft.NETCore.App/8.0.0-dev/Microsoft.NETCore.App.deps.json: "fedora.45-x64": [
artifacts/obj/Microsoft.NETCore.App.Composite.Bundle/Debug/net7.0/linux-x64/output/shared/Microsoft.NETCore.App/8.0.0-dev/Microsoft.NETCore.App.deps.json: "fedora.45-x64": [
artifacts/obj/Microsoft.NETCore.App.Runtime.Composite/Debug/net7.0/linux-x64/Microsoft.NETCore.App.deps.json: "fedora.45-x64": [
artifacts/obj/Microsoft.NETCore.App.Runtime.Composite/Debug/net7.0/linux-x64/output/shared/Microsoft.NETCore.App/8.0.0-dev/Microsoft.NETCore.App.deps.json: "fedora.45-x64": [
artifacts/obj/Microsoft.NETCore.App.Runtime/Debug/net7.0/linux-x64/Microsoft.NETCore.App.deps.json: "fedora.45-x64": [
artifacts/obj/Microsoft.NETCore.App.Runtime/Debug/net7.0/linux-x64/output/shared/Microsoft.NETCore.App/8.0.0-dev/Microsoft.NETCore.App.deps.json: "fedora.45-x64": [
artifacts/bin/Microsoft.NETCore.Platforms/Debug/runtime.json: "fedora.45-x64": {

Author:	ayakael
Assignees:	-
Labels:	area-Infrastructure-libraries
Milestone:	-

[ViktorHofer]

LGTM but we need a servicing template and an approval from Tactics.

[ViktorHofer]

I don't think that this change is complete. Does the Microsoft.NETCore.Platforms library build outside of the -allconfigurations leg? We need it to produce the runtime.json file in all legs.

[ayakael]

I don't think that this change is complete. Does the Microsoft.NETCore.Platforms library build outside of the -allconfigurations leg? We need it to produce the runtime.json file in all legs.

I wouldn't know, I just backported and tested within installer pipelines + Alpine's source-build, and it seems like everything flows.

@tmds do you have any insight on this?

[ViktorHofer]

If these changes are sufficient, then this LGTM

[carlossanlop]

Approved by Tactics. Signed off by area owner. CI is green. Ready to merge.