Update netfx alias to target .NET 4.7.2 (dotnet/corefx#28883)

Update netfx alias to target .NET 4.7.2 (dotnet/corefx#28883)

* Change netfx to target .NET 4.7.1

* Fix CoreFx.Private.TestUtilities to not reference System.Runtime.InteropServices.RuntimeInformation which is now inbox in netfx

* Fix StackTrace.Tests to be built against netstandard and run against netfx inbox

* Fix ValueTuple configurations to support net461 and add netfx placeholder configuration since in net471 it is now inbox

* Fix projects' package configurations that had netfx (net461) to still support net461 and netfx as a buildconfigurations

* Disable failing tests when running on .NET 4.7.1

* Make netfx target net472 and merge with master

* Update ActiveIssue comments to issue number only

* Workaround packages tests due to not installed targeting pack

* Match NSSupportPackage version to CLI's

* Remove netstandard support lib bin placing to runtime and testhost for netfx, fix reference paths to match new package

* Run UpdateVSConfigurations after merging conflicts with the newly updated SDK projects

* Add net461 package configuration to System.CodeDom

* Add net461 package configuration to System.Configuration.ConfigurationManager

* Add net461 package configuration to System.Security.Cryptography.Xml

* Add net461 package configuration to System.Security.Permissions

* Add net461 package configuration to System.ServiceModel.Syndication

Commit migrated from https://github.com/dotnet/corefx/commit/faad2e63b35bed10fe18195987a413308b97eded