SWITCHYARD-1236: updated the batik GAV.
SWITCHYARD-1384: Enhance WS-Security support
[SWITCHYARD-1207] - Added support for RPC style WSDL
[SWITCHYARD-1434] - Attachment support in SOAP gateway
SWITCHYARD-1367 Upgrade Freemarker
Upgrade Freemarker from 2.3.15 to 2.3.19.