[Windows] Add azcopy utility (#1008)

* azcopy10 deployment for Windows has been added

* small bugfixing

* Header has been added to Install-AzCopy.ps1

* Header has been added to Validate-AzCopy.ps1

* Packer tempaltes have been modified

images/win/scripts/SoftwareReport/SoftwareReport.Generator.ps1

@@ -93,6 +93,7 @@ $markdown += New-MDList -Style Unordered -Lines @(
 $markdown += New-MDHeader "CLI Tools" -Level 3
 $markdown += New-MDList -Style Unordered -Lines @(
     (Get-AzureCLIVersion),
+    (Get-AzCopyVersion),
     (Get-AzureDevopsExtVersion),
     (Get-AWSCLIVersion),
     (Get-AWSSAMVersion),