Add missing NuGet package

Author: ermshiperete

src/GitVersionCore.Tests/packages.config

@@ -5,6 +5,7 @@
   <package id="FluentDateTime" version="1.12.0" targetFramework="net45" />
   <package id="Fody" version="1.29.3" targetFramework="net45" developmentDependency="true" />
   <package id="LibGit2Sharp" version="0.21.0.176" targetFramework="net45" />
+  <package id="ModuleInit.Fody" version="1.5.8.0" targetFramework="net45" developmentDependency="true" />
   <package id="Mono.Cecil" version="0.9.6.1" targetFramework="net45" />
   <package id="NUnit" version="2.6.4" targetFramework="net45" />
   <package id="NUnitTestAdapter" version="2.0.0" targetFramework="net45" />