Recompiling Mellanox OFED drivers on Ubuntu nodes using dkms

Recompilation is needed since the drivers are compiled and
installed during Ubuntu installation on one kernel, but are
later used on a different kernel version.

Change-Id: I1fc4b7bf5603991a302e3ef145be57dd2f36e693
Closes-bug: 1396020
Signed-off-by: gilmeir <gilmeir@mellanox.com>