Sync eng/common directory with azure-sdk-tools for PR 1066 (#478)

* Update cache-control for newly created blobs

* remove extra

* remove extra space

* Added the cache control for existing blobs as well

* Update copy-docs-to-blobstorage.ps1

Co-authored-by: Sima Zhu <sizhu@microsoft.com>
Co-authored-by: Sima Zhu <48036328+sima-zhu@users.noreply.github.com>

eng/common/scripts/copy-docs-to-blobstorage.ps1

@@ -177,10 +177,9 @@ function Update-Existing-Versions
     $sortedVersionObj.LatestGAPackage | Out-File -File "$($DocLocation)/latest-ga" -Force -NoNewLine
     $sortedVersionObj.LatestPreviewPackage | Out-File -File "$($DocLocation)/latest-preview" -Force -NoNewLine
 
-    & $($AzCopy) cp "$($DocLocation)/versions" "$($DocDest)/$($PkgName)/versioning/versions$($SASKey)"
-    & $($AzCopy) cp "$($DocLocation)/latest-preview" "$($DocDest)/$($PkgName)/versioning/latest-preview$($SASKey)"
-    & $($AzCopy) cp "$($DocLocation)/latest-ga" "$($DocDest)/$($PkgName)/versioning/latest-ga$($SASKey)"
-
+    & $($AzCopy) cp "$($DocLocation)/versions" "$($DocDest)/$($PkgName)/versioning/versions$($SASKey)" --cache-control "max-age=300, must-revalidate"
+    & $($AzCopy) cp "$($DocLocation)/latest-preview" "$($DocDest)/$($PkgName)/versioning/latest-preview$($SASKey)" --cache-control "max-age=300, must-revalidate"
+    & $($AzCopy) cp "$($DocLocation)/latest-ga" "$($DocDest)/$($PkgName)/versioning/latest-ga$($SASKey)" --cache-control "max-age=300, must-revalidate"
     return $sortedVersionObj
 }
 
@@ -218,7 +217,7 @@ function Upload-Blobs
     } 
 
     Write-Host "Uploading $($PkgName)/$($DocVersion) to $($DocDest)..."
-    & $($AzCopy) cp "$($DocDir)/**" "$($DocDest)/$($PkgName)/$($DocVersion)$($SASKey)" --recursive=true
+    & $($AzCopy) cp "$($DocDir)/**" "$($DocDest)/$($PkgName)/$($DocVersion)$($SASKey)" --recursive=true --cache-control "max-age=300, must-revalidate"
 
     Write-Host "Handling versioning files under $($DocDest)/$($PkgName)/versioning/"
     $versionsObj = (Update-Existing-Versions -PkgName $PkgName -PkgVersion $DocVersion -DocDest $DocDest)
@@ -229,7 +228,7 @@ function Upload-Blobs
     if ($UploadLatest -and ($latestVersion -eq $DocVersion))
     {
         Write-Host "Uploading $($PkgName) to latest folder in $($DocDest)..."
-        & $($AzCopy) cp "$($DocDir)/**" "$($DocDest)/$($PkgName)/latest$($SASKey)" --recursive=true
+        & $($AzCopy) cp "$($DocDir)/**" "$($DocDest)/$($PkgName)/latest$($SASKey)" --recursive=true --cache-control "max-age=300, must-revalidate"
     }
 }