Ensure ratio calculated for Ceph journals is an integer
Ensure ratio calculated for Ceph journals is an integer

When creating journal paritions an osd-to-journal ratio is
calculated. This ratio is later used to determine the size
of each individual journal partition. The ratio was a floating
point number which would result in floating point partition
sizes causing dd commands to fail.

Change-Id: Ide1311de3dd3c4a859b5d9b00f3e86912489d761
Closes-bug: #1444459

openstack/bareon,openstack/bareon