core: Configure fence_kdump during host deploy

Sets parameters for kdump plugin in host deploy, so fence_kdump will be
properly configured during host deploy for hosts with enabled kdump
detection.

Change-Id: Idc12188588a6a35b8f03d26a9ee5ea55898943df
Bug-Url: https://bugzilla.redhat.com/1079821
Signed-off-by: Martin Perina <mperina@redhat.com>