Refactor display of a single data-source
Refactor display of a single data-source

Change-Id: I47a5ee5e24d783cf3fcbffa20c198d677ff459f9
Implements: blueprint python-savannaclient-cli

citrix-openstack-build/python-saharaclient,citrix-openstack-build/python-saharaclient,openstack/python-saharaclient,citrix-openstack-build/python-saharaclient