This patch add Mellanox Manager to support Mellanox
InfiniBand NICs.
It adds client_id to the NetworkInterface for the
InfiniBand network interface.
The Mellanox Manager provides it own implementation of
get_interface_info. The mlnx get_interface_info generate
InfiniBand MAC and client-id from the InfiniBand network
interface address.
Closes-Bug: #1532534
Change-Id: I4e7f7649a1bdeaa3ee99b2748037b0f37fea486c