Enable netfx build anywhere

Author: mgravell

tests/Doc/Doc.csproj

@@ -1,7 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
     <PropertyGroup>
-        <TargetFrameworks Condition=" '$(IsWindows)' == 'true'">net6.0;net7.0;net8.0;net481</TargetFrameworks>
-        <TargetFrameworks Condition=" '$(IsWindows)' != 'true'">net6.0;net7.0;net8.0</TargetFrameworks>
+        <TargetFrameworks>net6.0;net7.0;net8.0;net481</TargetFrameworks>
         <IsPackable>false</IsPackable>
 
         <!-- don't warn about obsolete APIs, or theory with no data -->

tests/NRedisStack.Tests/NRedisStack.Tests.csproj

@@ -1,7 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
     <PropertyGroup>
-        <TargetFrameworks Condition=" '$(IsWindows)' == 'true'">net6.0;net7.0;net8.0;net481</TargetFrameworks>
-        <TargetFrameworks Condition=" '$(IsWindows)' != 'true'">net6.0;net7.0;net8.0</TargetFrameworks>
+        <TargetFrameworks>net6.0;net7.0;net8.0;net481</TargetFrameworks>
         <IsPackable>false</IsPackable>
         <PreserveCompilationContext>true</PreserveCompilationContext>
     </PropertyGroup>

tests/NRedisStack.Tests/TokenBasedAuthentication/FaultInjectorClient.cs

@@ -1,4 +1,5 @@
 using System.Diagnostics;
+using System.Net.Http;
 using System.Text;
 using System.Text.Json;