* Trim trailing slash from SignCheckDirectory
* Set OfficialBuildId

Fixes https://github.com/aspnet/AspNetCore/issues/9901

* Update build.cmd to install .NET Core into $repoRoot/.dotnet instead of $repoRoot/.dotnet/x64
* Move restore sources from build/sources.props into eng/Versions.props (following arcade conventions)
* Remove usages of RuntimeFrameworkVersion in tests and build
* Update Blazor VSIX to use Arcade VSIX tools
* Rename Common.Tests to IIS.Common.TestLib and make it a test asset
* Remove custom versions props for ANCM installer code
* Remove duplicate references to xunit and remove usages of IsTestProject
* Remove duplicate references to Internal.AspNetCore.Analyzers
* Import Arcade.Sdk props and targets and remove custom versioning props
* Remove references to Internal.AspNetCore.Sdk
* Rename PackageLicenseType => PackageLicenseExpression
* Remove dependency on tasks in Internal.AspNetCore.Sdk, add ref to Internal.AspNetCore.BuildTasks as a temporary workaround
* Use Arcade's nuspec support
* Rename SignalR.Client.FunctionalTests to SignalR.Client.FunctionalTestApp
* Fixes for changes to property evaluation order
* Update BaseLineGenerator to netcoreapp3.0
* React to changes in evaluation order in RPM files and quirks in using <Exec> instead of <Run>
* Update Microsoft.Extensions.ApiDescription.Server to react to changes in Arcade packaging
* Workaround aspnet/AspNetCore#11009

This reverts commit b1a29281.

* Revert "Revert "Add an option to SignalR to guarantee ordering of send events… (#10807)"
  - This reverts commit 39a9d63c.
* Fixup build

Update Microsoft.AspNetCore.Blazor.Mono to 0.10.0-preview6.19273.9 and automatically flow updates (#10512)

Add <frameworkReferences> metadata to nuspec of packages that depend on the shared framework (#10429)

* Update log directory

This will now include functional test logs

* There were a few more places logs was used instead of log

The Arcade SDK requires that the obj/ and bin/ folders be placed in the top-level artifacts/ folder of the repo. Although this PR does not complete our Arcade convergence, this is a step towards updating our repo to build with the Arcade SDK.

Changes:
* Set output path for build to artifacts/bin/$(ProjectName)/ 
* Set intermediate output path for build to artifacts/obj/$(ProjectName)/
* Cleanup .gitignore files (remove duplication between repo-root and tested gitignore files)
* Add code check which looks for project files that share the same name (could cause issues)
* Rename project files to have unique names (avoid race condition of build output)
* Update all locations which were hard-coded to expect bin/ and obj/ in the project directory
* Add overrides for tests which still assert test binaries exist in a given location relative to the source code

Preparing to adopt the Arcade SDK, which uses the shorter variable name instead

* Add build for linux-musl-arm64

* Remove redundant apk installs

* Add yarn.lock file for NodeServices
* Remove references to 'npm install' (causes double-download of node modules) and replace npm commands in package.json with yarn for consistency
* Upgrade yarn to 1.15.2

This is the first step, and just estabilishes a skeleton. The end goal
is organize our analyzers under this node because:
1. We're writing some 'top level' analyzers that depend on everything
else
2. We want to be able to service analyzers on the SDK schedule
(independent of runtime).

Next, we'll merge the MVC analyzers into this assembly since there's no
reason for them to be separate. The MVC API analyzers will remain a
separate package, but under this node. The component analyzers will
remain separate as they need to ship as a package, but will move under
this node as well.

* EnableAzurePipelinesReporter for helix

* Update Helix SDK

* Revert a fix that broke things even more

* Try publishing test assets

* Try fixing Kestrel tests on Helix

* Try a temp file in the working directory

* Skip Http2Spec tests on Debian 8

* Missed update

* Try a different format

* Disable failing test on Fedora

* Mark flaky test

- aspnet/AspNetCore-Internal#2337

- make build.cmd work
- update build/repo.props

Co-Authored-By: BrennanConroy <brecon@microsoft.com>

Update dependency version of Extensions.Binder to avoid downgrading sharedfx versions from 2.1.10 (#9393)

Fix aspnet/AspNetCore-Internal#2269 - fix for missing dependency metadata on a few Extensions packages when building in ProdCon (#9387)

- Microsoft.Extensions.Logging.Azure.AppServices
- System.Data.SqlClient

Update MessagePack dependency

Update MessagePack dependency

Related work items: #142

* Ensure PackageArchive contains the right build of Razor.Design package

* Re-order values in build\dependencies.props to ensure Razor.Design's package version is
  overwritten.
* Convert additional package refs to project refs

Fixes https://github.com/aspnet/AspNetCore-Internal/issues/1708

* Update CodeCheck.ps1