Added ipmi installation to the Cisco vendor script.

Previous Cisco installers installed ipmi so that cobbler could
manage node's power. This is still needed functionality..

Change-Id: Id2793fea5c28f1f2a67bdda13ebc4dee707bc42b
Merge "Added ipmi installation to the Cisco vendor script."
Merge branch 'master' of https://github.com/stackforge/puppet_openstack_builder into coi-development