Test change, comment only
SMBCAP-5544: Fix paritioning for small disk config

The razor model "dtagcloud_ubuntu_compute failed to partition
disks of nodes of type "pizza box" from supermicro that usally
server as "iaas" machines. The problem was that the disk could
offer a minimum 161 GB for "/var" partition. The fixes sets
the minimum requirement to ~50 GB that is matched by "pizza box"
hardware.