needs netstandard1.3 for packaging reasons

Author: Mpdreamz

src/Connections/Elasticsearch.Net.Connections.HttpWebRequestConnection/Elasticsearch.Net.Connections.HttpWebRequestConnection.csproj

@@ -2,7 +2,7 @@
 <Project Sdk="Microsoft.NET.Sdk" ToolsVersion="15.0">
   <Import Project="..\..\..\build\Clients.Common.targets" />
   <PropertyGroup>
-    <TargetFrameworks Condition="'$(OS)' == 'Windows_NT'">net46</TargetFrameworks>
+    <TargetFrameworks Condition="'$(OS)' == 'Windows_NT'">net46;netstandard1.3</TargetFrameworks>
     <TargetFrameworks Condition="'$(OS)' != 'Windows_NT'">netstandard1.3</TargetFrameworks>
     <DefineConstants Condition="'$(TargetFramework)'=='net46'">$(DefineConstants);FEATURE_HTTPWEBREQUEST</DefineConstants>
   </PropertyGroup>