(build) Bump to Cake.Recipe 3.1.1

This includes the ability for us to control the ignore list that is
used by KuduSync, which will hopefully allow us to get past the sync
error regarding "_git2" folders.

Author: gep13

docs/input/docs/index.md

@@ -10,4 +10,6 @@ then used to create a Release on GitHub.
 
 In addition to creating a Release, GitReleaseManager can be used to publish a
 release, close a milestone, and also to export the complete set of release notes
-for your application/product.
+for your application/product.
+
+Another build test...

recipe.cake

@@ -1,4 +1,4 @@
-#load nuget:?package=Cake.Recipe&version=3.0.1
+#load nuget:?package=Cake.Recipe&version=3.1.1
 #tool dotnet:?package=dotnet-t4&version=2.2.1
 #addin nuget:?package=Cake.Git&version=0.22.0
 
@@ -27,7 +27,8 @@ BuildParameters.PrintParameters(Context);
 ToolSettings.SetToolSettings(context: Context,
                             testCoverageFilter: "+[GitReleaseManager*]* -[GitReleaseManager.Core.Tests*]* -[GitReleaseManager.Tests*]*",
                             testCoverageExcludeByAttribute: "*.ExcludeFromCodeCoverage*",
-                            testCoverageExcludeByFile: "*/*Designer.cs;*/*.g.cs;*/*.g.i.cs");
+                            testCoverageExcludeByFile: "*/*Designer.cs;*/*.g.cs;*/*.g.i.cs",
+                            kuduSyncIgnore: ".git;CNAME;_git2");
 
 BuildParameters.Tasks.DotNetCoreBuildTask.Does((context) =>
 {