ASACORE-1142: Named Pipe Client Transport should authenticate using "External"

Since Named Pipe daemon transport is using Security descriptor to
authenticate, daemon side is authenticating the endpoint using "External".
Named Pipe Client Transport should also authenticate endpoint using
"External" and not "Anonymous".

Change-Id: Id0ab9b00c89a22d07b5991110c94d1839d3c23c8
Signed-off-by: Rajneesh <rajban@microsoft.com>
Merge "ASACORE-1142: Named Pipe Client Transport should authenticate using "External""