Fix CLU Mutex Issue

Author: huangpf

src/CLU/Commands.Common.ScenarioTest/SampleTest.cs

@@ -47,7 +47,7 @@ public void VirtualHardDisksTest()
         }
 
         [Fact]
-        public void RunVirtualMachineSizeTest()
+        public void VirtualMachineSizeTest()
         {
             var helper = _collectionState.GetRunner("compute-management");
             helper.RunScript("01-VirtualMachineSizes");

src/CLU/Sync/Upload/BlobCreatorBase.cs

@@ -300,7 +300,9 @@ private static Mutex AcquireSingleInstanceMutex(Uri destinationBlobUri)
             Mutex singleInstanceMutex = null;
             try
             {
-                singleInstanceMutex = new Mutex(false, @"Global\" + mutexName);
+                // TODO: CLU
+                singleInstanceMutex = new Mutex(false);
+                //singleInstanceMutex = new Mutex(false, @"Global\" + mutexName);
                 // TODO: CLU
                 if (!singleInstanceMutex.WaitOne(TimeSpan.FromSeconds(5)))
                 //if (!singleInstanceMutex.WaitOne(TimeSpan.FromSeconds(5), false))