[Storage] Test run time tweaks. (Azure#16883)

Resolves Azure#9144 and Azure#9143

Sample build https://dev.azure.com/azure-sdk/internal/_build/results?buildId=615495&view=results

Author: kasobol-msft

sdk/storage/Azure.Storage.Common/tests/Shared/StorageTestBase.cs

@@ -27,8 +27,7 @@ public abstract class StorageTestBase : RecordedTestBase
     {
         static StorageTestBase()
         {
-            // https://github.com/Azure/azure-sdk-for-net/issues/9087
-            // .NET framework defaults to 2, which causes issues for the parallel upload/download tests.
+            // .NET framework defaults to 2, which causes issues for the parallel upload/download tests. Go out of bound like .NET Core does.
 #if !NETCOREAPP
             ServicePointManager.DefaultConnectionLimit = int.MaxValue;
 #endif

sdk/storage/tests.yml

@@ -4,8 +4,8 @@ extends:
   template: ../../eng/pipelines/templates/jobs/archetype-sdk-tests.yml
   parameters:
     ServiceDirectory: storage
-    BuildInParallel: false
-    TimeoutInMinutes: 360
+    BuildInParallel: true
+    TimeoutInMinutes: 90
     Location: canadacentral
     SubscriptionConfiguration: $(sub-config-azure-cloud-test-resources-preview)
     TestSetupSteps: