Add SessionStateTests to AssemblyLoadContext collection

test/csharp/test_SessionState.cs

@@ -13,12 +13,12 @@ using Microsoft.PowerShell.Linux.Host;
 
 namespace PSTests
 {
+    [Collection("AssemblyLoadContext")]
     public class SessionStateTests
     {
         [Fact]
         public void TestDrives()
         {
-			PowerShellAssemblyLoadContextInitializer.SetPowerShellAssemblyLoadContext(AppContext.BaseDirectory);
             CultureInfo currentCulture = CultureInfo.CurrentCulture;
             PSHost hostInterface =  new DefaultHost(currentCulture,currentCulture);
             RunspaceConfiguration runspaceConfiguration =  RunspaceConfiguration.Create();
@@ -29,6 +29,5 @@ namespace PSTests
             Collection<PSDriveInfo> drives = sessionState.Drives(null);
             Assert.True(drives.Count>0);
         }
-
     }
 }