Code review comment for ~akaris/cloud-init:bug1679817-c

Hi,

I think we can at least forget about CentOS/RHEL 5:
https://wiki.centos.org/FAQ/General#head-fe8a0be91ee3e7dea812e8694491e1dde5b75e6d
https://access.redhat.com/support/policy/updates/errata

They went both end of production phase 3 at March 31, 2017

Remains testing for 6 to do

- Andreas