anchor.diff:  Finally create service principal to enable authenticated access:
   
   <pre class="terminal">
  -$ azure ad sp create 33e56099-0bde-8z93-a005-89c0f6df7465
  +$ azure ad sp create service_principal --applicationId 33e56099-0bde-8z93-a005-89c0f6df7465
   $ azure role assignment create --roleName "Contributor" --spn "http://BOSHAzureCPI" --subscription 3c39a033-c306-4615-a4cb-260418d63879
   </pre>
   
  
positive.code: ---
  ## <a id="storage-account"></a> Storage Account
  
  Create a default storage account to hold root disks, persistent disks, stemcells, etc.:
  
  <pre class="terminal">
  $ azure storage account create boshstore --resource-group bosh-res-group --location "Central US"
  
negative.code: 
  <pre class="terminal">
  $ azure account set 3c39a033-c306-4615-a4cb-260418d63879
  </pre>
  
  Register the required providers:
  
  <pre class="terminal">
  $ azure provider register Microsoft.Network
  $ azure provider register Microsoft.Storage
  $ azure provider register Microsoft.Compute
  </pre>
  
  ---
  