Add Option to use AzCopy

Syndication/AzureStack.MarketplaceSyndication.psm1

@@ -140,9 +140,23 @@ function Sync-AzSOfflineMarketplaceItem {
                 New-Item "$destination\$azpkgName.azpkg"
             }
             $azpkgdestination = "$destination\$azpkgName.azpkg"
-            (New-Object System.Net.WebClient).DownloadFile("$azpkgsource",$azpkgdestination) 
-
 
+            #Select Premium Download
+            $a = new-object -comobject wscript.shell
+            $intAnswer = $a.popup("Would yuu like to use Premium download? This requires Azure Storage Tools to be installed", `
+                    0, "Premium Download", 4)
+        If ($intAnswer -eq 6) {
+            ($checktool= test-path 'C:\Program Files (x86)\Microsoft SDKs\Azure\AzCopy\AzCopy.exe' )
+            If ($checktool -eq $true){
+                & 'C:\Program Files (x86)\Microsoft SDKs\Azure\AzCopy\AzCopy.exe' /Source:$azpkgsource /Dest:$azpkgdestination /Y
+            }
+            else{
+                $a.popup("Please install Azure Storage Tools first, canceling")
+            }
+            
+        } else {
+            {(New-Object System.Net.WebClient).DownloadFile("$azpkgsource",$azpkgdestination) }
+        }
 
             switch ($downloadDetails.productKind) {
                 'virtualMachine' {
@@ -156,7 +170,20 @@ function Sync-AzSOfflineMarketplaceItem {
                             New-Item "$destination\$vhdName.vhd" 
                         }
                         $vhdDestination = "$destination\$vhdName.vhd"
-                        (New-Object System.Net.WebClient).DownloadFile("$vhdsource",$vhddestination) 
+
+                        #Select Premium Download
+            $a = new-object -comobject wscript.shell
+            $intAnswer = $a.popup("Would yuu like to use Premium download? This requires Azure Storage Tools to be installed", `
+                    0, "Premium Download", 4)
+        If ($intAnswer -eq 6) {
+            ($checktool= test-path 'C:\Program Files (x86)\Microsoft SDKs\Azure\AzCopy\AzCopy.exe' )
+            If ($checktool -eq $true){        
+            & 'C:\Program Files (x86)\Microsoft SDKs\Azure\AzCopy\AzCopy.exe' /Source:$vhdsource /Dest:$vhddestination /Y
+            }
+            else{
+                $a.popup("Please install Azure Storage Tools first,canceling")
+            }
+        }else{(New-Object System.Net.WebClient).DownloadFile("$vhdsource",$vhddestination) }
                     }
                 }
                 'virtualMachineExtension' {
@@ -169,8 +196,19 @@ function Sync-AzSOfflineMarketplaceItem {
                             New-Item "$destination\$zipName.zip" 
                         }
                         $zipDestination = "$destination\$zipName.zip"
-    
-                        Start-BitsTransfer -source $zipsource -destination $zipDestination -Priority High
+                        #Select Premium Download
+            $a = new-object -comobject wscript.shell
+            $intAnswer = $a.popup("Would yuu like to use Premium download? This requires Azure Storage Tools to be installed", `
+                    0, "Premium Download", 4)
+        If ($intAnswer -eq 6) {
+            ($checktool= test-path 'C:\Program Files (x86)\Microsoft SDKs\Azure\AzCopy\AzCopy.exe' )
+            If ($checktool -eq $true){          
+            & 'C:\Program Files (x86)\Microsoft SDKs\Azure\AzCopy\AzCopy.exe' /Source:$zipsource /Dest:$zipdestination /Y
+            }
+            else{
+                $a.popup("Please install Azure Storage Tools first,canceling")
+            }
+        }else{(New-Object System.Net.WebClient).DownloadFile("$zipsource",$zipdestination)}
                     }
                 }