Add dict2columns()
Add dict2columns()

Add ShowOne.dict2columns() to handle the common process of displaying
a single dict as two columns of key and value.

varunarya10/cliff,idjaw/cliff,dtroyer/cliff,openstack/cliff,citrix-openstack-build/cliff,citrix-openstack-build/cliff,idjaw/cliff,dtroyer/cliff,openstack/cliff,varunarya10/cliff,enzochiau/cliff,enzochiau/cliff