Travis builds are failing because the lshw package was not added
to the vdsm test docker images.

The offending patch is:

network: report dpdk devices as nics
added link_info dictionary for dpdk dev information.
Currently it contains hard coded and empty values.

getLinks now reports dpdk devices as nics and providing
their link_info as well.

Signed-off-by: Irit Goihman <igoihman@redhat.com>
Change-Id: I67b2083e9c6f032472fd75f6800c864083ffdef5

When adding new build dependencies, please add the
required packages to docker/Dockerfile.* 

Thanks,
Nir