[HOPSWORKS-1467][append] expat fixes - also affects [HOPSWORKS-1354] (#375)
[HOPSWORKS-1467][append] expat fixes - also affects [HOPSWORKS-1354] (#375)


hopshadoop/hopsworks-chef,hopshadoop/hopsworks-chef,hopshadoop/hopsworks-chef,hopshadoop/hopsworks-chef