Update dependencies from https://github.com/dotnet/arcade build 20190208.1 (#335)

This change updates the following dependencies
- Microsoft.DotNet.Arcade.Sdk - 1.0.0-beta.19108.1

eng/Version.Details.xml

@@ -47,9 +47,9 @@
     </Dependency>
   </ProductDependencies>
   <ToolsetDependencies>
-    <Dependency Name="Microsoft.DotNet.Arcade.Sdk" Version="1.0.0-beta.19107.1">
+    <Dependency Name="Microsoft.DotNet.Arcade.Sdk" Version="1.0.0-beta.19108.1">
       <Uri>https://github.com/dotnet/arcade</Uri>
-      <Sha>03c88c88a653dd8122cf599974e6073f27787a3f</Sha>
+      <Sha>044309163eadaad0068156f0327af458d562f171</Sha>
     </Dependency>
   </ToolsetDependencies>
 </Dependencies>

global.json

@@ -9,6 +9,6 @@
     "version": "3.0.100-preview-010024"
   },
   "msbuild-sdks": {
-    "Microsoft.DotNet.Arcade.Sdk": "1.0.0-beta.19107.1"
+    "Microsoft.DotNet.Arcade.Sdk": "1.0.0-beta.19108.1"
   }
 }