Fix dump utility and improve its logging
Fix dump utility and improve its logging

Change-Id: I04b795743290c1d7554334e18dd35efa1d7d9887

0xf2/stackalytics,openstack/stackalytics,Code-Fly/stackalytics,Mirantis/stackalytics,Code-Fly/stackalytics,Mirantis/stackalytics,0xf2/stackalytics,nihilifer/stackalytics,stackforge/stackalytics,Solinea/stackalytics,AlexanderYAPPO/stackalytics,danielmellado/stackalytics,dliu2015/stackalytics_zanata,Mirantis/stackalytics,mhharsh/stackalytics,openstack/stackalytics,Solinea/stackalytics,0xf2/stackalytics,dliu2015/stackalytics_zanata,AlexanderYAPPO/stackalytics,mhharsh/stackalytics,stackforge/stackalytics,Solinea/stackalytics,AlexanderYAPPO/stackalytics,danielmellado/stackalytics,stackforge/stackalytics,Code-Fly/stackalytics,nihilifer/stackalytics,openstack/stackalytics,openstack/stackalytics,mohitsethi/stackalytics,0xf2/stackalytics,danielmellado/stackalytics,dliu2015/stackalytics_zanata,mohitsethi/stackalytics,mohitsethi/stackalytics,nihilifer/stackalytics,mhharsh/stackalytics