Port -nobl and net5.0 changes from 'master'

[dougbu]

• Update dependencies from https://github.com/dotnet/arcade build 20200511.9

  • Microsoft.DotNet.Arcade.Sdk: 5.0.0-beta.20228.4 => 5.0.0-beta.20261.9
  • Microsoft.DotNet.GenAPI: 5.0.0-beta.20228.4 => 5.0.0-beta.20261.9
  • Microsoft.DotNet.Helix.Sdk: 5.0.0-beta.20228.4 => 5.0.0-beta.20261.9

• Pre-emptively take -nobl change

• Disable binlogs in CI

• Fix build.sh to know about -nobl

• Align build.ps1|sh with latest Arcade parameters

  • do not enable binary logs by default in CI builds
  • leave -binaryLog and -excludeCIBinaryLog handling to eng/common/tools.ps1|sh
    • was unnecessary since -bl /bl:{some name} worked fine, ignoring OOMs

nit: document -excludeCIBinarylog a bit more

• Do not pass unknown options into CodeCheck.ps1

• Pass -ci -nobl into remaining CI build jobs

• Switch default TFM to net5.0

• Update missing project templates tfms

• Add more -ci -nobl

  • needed because all builds in the pipeline are implicitly CI builds
    • default-build.yml adds -ci when script wasn't explicit

• Default templates to net5.0

• PR feedback

• Update TFMs in explicit .nuspec files

• Update TFMs in test projects

• Update TFMs in test C# code

• Update TFMs in infrastructure files

• Future-proof a check for net5.0 or later

  • avoid comparisons involving $(TargetFramework) in .targets files
    • fine to compare it with '' or $(DefaultNetCoreTargetFramework)

• !fixup! Undo a couple of earlier fixes

  • remove a duplicate $() setting
  • correct the one remaining versioned #if define
    • did not make it #if NETCOREAPP because benchmarks test numerous .NET Core TFMs

• Disable binary logs in CodeCheck.ps1

• Specify -ci -nobl just once when using parameters.buildArgs

• Restore $binaryLog default logic

This cherry-picks most of d5849f3 into this branch

• [master] Update dependencies from dotnet/arcade dotnet/aspnetcore-tooling ([master] Update dependencies from dotnet/arcade dotnet/aspnetcore-tooling #21630)
• does not include dotnet/aspnetcore-tooling updates

Co-authored-by: dotnet-maestro[bot] <42748379+dotnet-maestro[bot]@users.noreply.github.com>
Co-authored-by: Will Godbe wigodbe@microsoft.com
Co-authored-by: Viktor Hofer viktor.hofer@microsoft.com

[dougbu]

@Pilchie if we're 🆗 with the occasional msbuild OOM in this branch, I could undo the Arcade and -nobl part of this PR. Let me know…

[Pilchie]

I'd rather just take it as is. It seems silly to do a bunch of work to make our builds less reliable...