Fixed failing tests in Authentication.

Author: Hao Chen

src/Common/Authentication/Common.Authentication.Tests/Properties/AssemblyInfo.cs

@@ -1,5 +1,6 @@
 using System.Reflection;
 using System.Runtime.InteropServices;
+using Xunit;
 
 // General Information about an assembly is controlled through the following 
 // set of attributes. Change these attribute values to modify the information
@@ -33,3 +34,4 @@
 // [assembly: AssemblyVersion("1.0.*")]
 [assembly: AssemblyVersion("1.0.0.0")]
 [assembly: AssemblyFileVersion("1.0.0.0")]
+[assembly: CollectionBehavior(MaxParallelThreads = 1, DisableTestParallelization = true)]

src/Common/Authentication/Common.Authentication/Factories/ClientFactory.cs

@@ -98,8 +98,8 @@ public virtual TClient CreateClient<TClient>(AzureContext context, AzureEnvironm
 
             ServiceClientCredentials creds = AzureSession.AuthenticationFactory.GetSubscriptionCloudCredentials(context, endpoint);
             TClient client = CreateCustomClient<TClient>(
+                context.Environment.GetEndpointAsUri(endpoint),
                 creds, 
-                context.Environment.GetEndpointAsUri(endpoint), 
                 GetCustomHandlers());
 
             return client;