Fix for multipart soap response

Fix for multipart soap response
now this will handle soap response like this

--uuid:a75a88ed-7f52-4e16-9e52-ad03e9b365e1
Content-Type: application/xop+xml; charset=UTF-8; type="text/xml"
Content-Transfer-Encoding: binary
Content-ID: <root.message@cxf.apache.org>

<soap:Envelope
xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/"><soap:Body><ns2:getAPIVersionResponse
xmlns:ns2="http://www.tech.com/tech/billiantapi"><ns2:APIVersion>1.0</ns2:APIVersion></ns2:getAPIVersionResponse></soap:Body></soap:Envelope>
--uuid:a75a88ed-7f52-4e16-9e52-ad03e9b365e1--