Ignore httpbin tests

Author: FlorianRappl

src/AngleSharp.Io.Tests/Cookie/ClassicTests.cs

@@ -258,6 +258,7 @@ public async Task SettingThreeCookiesInOneRequestAreTransportedToNextRequest()
         }
 
         [Test]
+        [Ignore("We should find a replacement for HttpBin.org")]
         public async Task SettingCookieIsPreservedViaRedirect()
         {
             if (Helper.IsNetworkAvailable())

src/AngleSharp.Io.Tests/Network/CookieHandlingTests.cs

@@ -74,6 +74,7 @@ public async Task SettingThreeCookiesInOneRequestAreTransportedToNextRequest()
         }
 
         [Test]
+        [Ignore("We should find a replacement for HttpBin.org")]
         public async Task SettingCookieIsPreservedViaRedirect()
         {
             if (Helper.IsNetworkAvailable())
@@ -95,6 +96,7 @@ public async Task SettingCookieIsPreservedViaRedirect()
         }
 
         [Test]
+        [Ignore("We should find a replacement for HttpBin.org")]
         public async Task SettingCookieIsPreservedViaRedirectToDifferentProtocol()
         {
             if (Helper.IsNetworkAvailable())

src/AngleSharp.Io/AngleSharp.Io.csproj

@@ -30,6 +30,12 @@
     <Reference Include="System.Net.WebSockets" />
   </ItemGroup>
 
+  <ItemGroup Condition="'$(TargetFramework)' == 'net461'">
+    <Reference Include="System.Net" />
+    <Reference Include="System.Net.Http" />
+    <Reference Include="System.Net.WebSockets" />
+  </ItemGroup>
+
   <ItemGroup Condition="'$(TargetFramework)' == 'net472'">
     <Reference Include="System.Net.Http" />
   </ItemGroup>