[ebxml-iic-interop] Another issue for Test Requirements

Well it's come to my attention we may have a correction for the 
test requirements 
document.

urn:semreq:id:162

ApplySecurityBasedOnTransportOfCPA

ebMS-2#4.1.3
( 
For each generated message if,based upon the Transport section of the relevent 
CPA, a signature is required for the entire message )
REQUIRED
A Signature 
element must be present, and its SignedInfo element contains a Reference element 
to the SOAP envelope which has a URI attribute value of ""
[evl] CPA defines Transport as network 
communications
while 
the XMLDsig comes into play for DocExchange
specifically for 
SenderNonRepudiation and ReceiverNonRepudiation elements.The 
DeliveryChannel binds Transport with DocExchange. 

So we should change Transport 
to DocExchange or DeliveryChannel for this 
requirement.