IPMI driver (bug fixes).
IPMI driver (bug fixes).

Change-Id: Iceb368e6882cc34029e9488bc3425f1321e62903

lpouillo/kwapi-g5k,openstack/kwapi,stackforge/kwapi,lpouillo/kwapi-g5k,lpouillo/kwapi-g5k,lpouillo/kwapi-g5k,stackforge/kwapi,stackforge/kwapi,stackforge/kwapi,openstack/kwapi,openstack/kwapi,openstack/kwapi