Fixed debchange tool's removal of timestamp and wrong sort order in changelog
Fixed debchange tool's removal of timestamp and wrong sort order in changelog

Signed-off-by: Rohit Yadav <rohit.yadav@shapeblue.com>

This closes #291

jcshen007/cloudstack,resmo/cloudstack,GabrielBrascher/cloudstack,GabrielBrascher/cloudstack,DaanHoogland/cloudstack,wido/cloudstack,wido/cloudstack,GabrielBrascher/cloudstack,wido/cloudstack,wido/cloudstack,jcshen007/cloudstack,resmo/cloudstack,wido/cloudstack,resmo/cloudstack,jcshen007/cloudstack,resmo/cloudstack,resmo/cloudstack,DaanHoogland/cloudstack,wido/cloudstack,GabrielBrascher/cloudstack,jcshen007/cloudstack,jcshen007/cloudstack,DaanHoogland/cloudstack,GabrielBrascher/cloudstack,jcshen007/cloudstack,GabrielBrascher/cloudstack,resmo/cloudstack,DaanHoogland/cloudstack,DaanHoogland/cloudstack,DaanHoogland/cloudstack,wido/cloudstack,GabrielBrascher/cloudstack,resmo/cloudstack,DaanHoogland/cloudstack,jcshen007/cloudstack