Adds RecallOn* file attributes (#805)

* Adds RecallOn* file attributes

Fixes #763

* Update powershell/CompiledHelpers/VstsTaskSdk.cs

---------

Co-authored-by: Denis Rumyantsev <v-denisr@microsoft.com>

Author: jessehouwing

powershell/CompiledHelpers/VstsTaskSdk.cs

@@ -222,7 +222,9 @@ public enum Attributes : uint
         PosixSemantics = 0x01000000,
         OpenReparsePoint = 0x00200000,
         OpenNoRecall = 0x00100000,
-        FirstPipeInstance = 0x00080000
+        FirstPipeInstance = 0x00080000,
+        RecallOnDataAccess = 0x00400000,
+        RecallOnOpen = 0x00040000
     }
     [Flags]
     public enum FindFlags