groovy rest resource now (due to jersey upgrade? or api inheritance?) must define what it consumes
fix bug where policy config doesn't display because rest server returns non-serializable default value AutoScaler$3
just print one line of stack trace in stdout (rest in stderr) so that console log doesn't become hopelessly unreadable on errors
(e.g. when starting a 5-node app and we get an early cloud error, with all 5 nodes failing and propagating upwards, without this we have thousands of stack trace lines we have to scroll back through to see the core problem!)
Merge pull request #838 from ahgittin/fix/misc4

minor misc fixes and tidies encountered using this in the field