wsse does not sign parts required by WSDL #497
Description
If the WSDL file specifies the document parts that need to be signed, as in example below, the signature.py module doesn't sign any of them except for Body and Timestamp (which are hard coded for some reason)
<sp:SignedParts xmlns="http://schemas.xmlsoap.org/wsdl/" xmlns:ebs="http://ebs.health.ontario.ca/" xmlns:hcv="http://hcv.health.ontario.ca/" xmlns:idp="http://idp.ebs.health.ontario.ca/" xmlns:msa="http://msa.ebs.health.ontario.ca/" xmlns:soap="http://schemas.xmlsoap.org/wsdl/soap/" xmlns:sp="http://docs.oasis-open.org/ws-sx/ws-securitypolicy/200512" xmlns:wsdlsoap="http://schemas.xmlsoap.org/wsdl/soap/" xmlns:wsse="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-secext-1.0.xsd" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<sp:Header Name="EBS" Namespace="http://ebs.health.ontario.ca/"/>
<sp:Header Name="MSA" Namespace="http://msa.ebs.health.ontario.ca/"/>
<sp:Header Name="Timestamp" Namespace="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd"/>
<sp:Header Name="UsernameToken" Namespace="http://docs.oasis-open.org/wss/2004/01/oasis-200401-wss-wssecurity-utility-1.0.xsd"/>
<sp:Body/>
</sp:SignedParts>