crypto: add TLS 1.1 and 1.2 to secureProtocol list
src: move ReqWrap::data_ to FSReqWrap

FSReqWrap is the only ReqWrap child class that uses the data_ field so
move it out of ReqWrap and into FSReqWrap.
src: clean up FSReqWrap

Move the 'free FSReqWrap data?' logic into the class itself.