Change Json Serializer in VfsStatEntry to use lower case. This makes it inline with the format C9 uses (https://github.com/c9/vfs-http-adapter)
Change Json Serializer in VfsStatEntry to use lower case.
This makes it inline with the format C9 uses
(https://github.com/c9/vfs-http-adapter)

Fixes #587

projectkudu/kudu,juvchan/kudu,EricSten-MSFT/kudu,juvchan/kudu,oliver-feng/kudu,chrisrpatterson/kudu,uQr/kudu,shibayan/kudu,MavenRain/kudu,bbauya/kudu,dev-enthusiast/kudu,juoni/kudu,sitereactor/kudu,kenegozi/kudu,sitereactor/kudu,bbauya/kudu,MavenRain/kudu,barnyp/kudu,puneet-gupta/kudu,projectkudu/kudu,shrimpy/kudu,puneet-gupta/kudu,EricSten-MSFT/kudu,projectkudu/kudu,juoni/kudu,mauricionr/kudu,YOTOV-LIMITED/kudu,kali786516/kudu,kenegozi/kudu,puneet-gupta/kudu,mauricionr/kudu,puneet-gupta/kudu,duncansmart/kudu,kali786516/kudu,barnyp/kudu,juoni/kudu,badescuga/kudu,badescuga/kudu,duncansmart/kudu,shibayan/kudu,shanselman/kudu,shibayan/kudu,juvchan/kudu,uQr/kudu,MavenRain/kudu,chrisrpatterson/kudu,duncansmart/kudu,bbauya/kudu,oliver-feng/kudu,barnyp/kudu,mauricionr/kudu,shanselman/kudu,barnyp/kudu,juvchan/kudu,WeAreMammoth/kudu-obsolete,juoni/kudu,MavenRain/kudu,sitereactor/kudu,projectkudu/kudu,YOTOV-LIMITED/kudu,shibayan/kudu,kenegozi/kudu,WeAreMammoth/kudu-obsolete,kali786516/kudu,YOTOV-LIMITED/kudu,projectkudu/kudu,juvchan/kudu,badescuga/kudu,sitereactor/kudu,badescuga/kudu,badescuga/kudu,shanselman/kudu,dev-enthusiast/kudu,dev-enthusiast/kudu,kenegozi/kudu,sitereactor/kudu,dev-enthusiast/kudu,WeAreMammoth/kudu-obsolete,uQr/kudu,EricSten-MSFT/kudu,shrimpy/kudu,duncansmart/kudu,uQr/kudu,puneet-gupta/kudu,bbauya/kudu,YOTOV-LIMITED/kudu,shrimpy/kudu,EricSten-MSFT/kudu,shrimpy/kudu,EricSten-MSFT/kudu,chrisrpatterson/kudu,mauricionr/kudu,oliver-feng/kudu,kali786516/kudu,chrisrpatterson/kudu,oliver-feng/kudu,shibayan/kudu