Sync eng/common directory with azure-sdk-tools for PR 2771 (Azure#20547)

* Fix up parameters

* Update general azcopy tool for copying from blobstorage

Co-authored-by: Chidozie Ononiwu <chononiw@microsoft.com>

Author: azure-sdk

eng/common/scripts/copy-from-blobstorage.ps1

@@ -0,0 +1,12 @@
+param (
+    [Parameter(Mandatory = $true)]
+    [string] $SourceBlobPath,
+    [Parameter(Mandatory = $true)]
+    [string] $ApplicationId,
+    [Parameter(Mandatory = $true)]
+    [string] $DestinationDirectory
+)
+
+azcopy login --service-principal --application-id $ApplicationId
+Write-Host "Copying from $SourceBlobPath to $DestinationDirectory ..."
+azcopy cp "${SourceBlobPath}/*" $DestinationDirectory --recursive=true