Allow custom assembly attributes; only override version attributes.

Author: bddckr

src/GitVersion.MsBuild/msbuild/tools/GitVersion.MsBuild.props

@@ -37,7 +37,9 @@
         <!-- Property that enables UpdateAssemblyInfo. -->
         <UpdateAssemblyInfo Condition=" '$(DisableGitVersionTask)' == 'true' ">false</UpdateAssemblyInfo>
         <UpdateAssemblyInfo Condition=" '$(UpdateAssemblyInfo)' == '' ">true</UpdateAssemblyInfo>
-        <GenerateAssemblyInfo Condition=" '$(UpdateAssemblyInfo)' == 'true' ">false</GenerateAssemblyInfo>
+        <GenerateAssemblyFileVersionAttribute Condition=" '$(UpdateAssemblyInfo)' == 'true' ">false</GenerateAssemblyFileVersionAttribute>
+        <GenerateAssemblyInformationalVersionAttribute Condition=" '$(UpdateAssemblyInfo)' == 'true' ">false</GenerateAssemblyInformationalVersionAttribute>
+        <GenerateAssemblyVersionAttribute Condition=" '$(UpdateAssemblyInfo)' == 'true' ">false</GenerateAssemblyVersionAttribute>
 
         <!-- Property that enables GenerateGitVersionInformation -->
         <GenerateGitVersionInformation Condition=" '$(DisableGitVersionTask)' == 'true' ">false</GenerateGitVersionInformation>