XD-653 - Add ALLOW_SINGLE_QUOTES to json mappers
XD-632: Add --file & --contentType support to http post command
* Add support for file to http post + enhance http source to honor Content-Type if present
* Use ISO-8859-1 as the default charset
XD-648 Regression test on file source

fix dir attribute of file source

rename duplicate parameter

add basic tests against file source/sink

remove fromEnd
XD-655 - Trimmed http post command output
XD-650 Ensure a clean build after running gradle->refresh