CopyObject_Test5: pass test if error is NotImplemented functionality (#246)
CopyObject_Test5: pass test if error is NotImplemented functionality (#246)

Update CopyObject_Test6 to omit etag equality,as it is not guaranteed
to be same on src and dest side even for small objects on Azure
poornas/minio-dotnet,poornas/minio-dotnet,minio/minio-dotnet