January 2018 VSTS Hosted Agent Image Updates

This post details the January 2018 updates for Azure Pipelines hosted agent images. Key updates include disabling the IE Welcome Screen, adding .NET Core SDK 2.1.4, updating Node.js to 8.9.1, and upgrading Visual Studio to 15.5.3 with additional components like Windows 8.1 SDK, Native Desktop SDKs, Blend SDK for WPF, and .NET Framework 4.6.2 and 4.7.1 developer tools and SDKs. It also adds the Wix Vsix extension, updates SSDT to 15.5.1, includes Android components (platform-27, build-tools 27.0.1, add-ons), adds Azure PowerShell 5.1.1, and extends JAVA_HOME variables for Java 8 and 9. The Linux agent image sees an update to the Docker daemon to 17.12.