Merge pull request #27 from nilxam/epoch_to_isodate

convert epoch time to ISO date when suggesting new needle name
avoid 2 apparmor problems

- qemu 2.1 wants load a plugin from /usr/lib64
- we need to save qemu snapshots in /var/tmp
Merge pull request #28 from os-autoinst/coolo_fix_apparmor

avoid 2 apparmor problems
replace old ISO date to Today when suggesting new needle filename