cli: list xxx --show all - output is not well formatted(#890038)

There are indentation differences between the listed devices
when there are extra fields in some devices.

Change-Id: Ibcaa28d3718f8dd0aceb3935ae2606713eee34e9
Bug-Url: https://bugzilla.redhat.com/890038
Signed-off-by: Ravi Nori <rnori@redhat.com>