File attachment doesn't works

[fabriciosanchez]

File attachment doesn't works for existing or new workloads / backlogs.

[fcatae]

Problem is at this file

https://github.com/DXBrazil/Arda/blob/master/src/Arda.Main/Controllers/WorkloadController.cs

            var Configuration = new ConfigurationBuilder().AddJsonFile("secrets.json").Build();
            var connectionString = Configuration["Storage:AzureBLOB:ConnectionString"];
            var containerName = Configuration["Storage:AzureBLOB:ContainerName"];

[fcatae]

Need to fix with #40