Add HugePages support for creating environments

- Add environment variable DRIVER_USE_HUGEPAGES=false (default)
  to libvirt-based templates
- Remove outdated templates (mk22/aio)

Change-Id: Id8726917cf43dd45bf5cf73a2e76b74dfb0409ea
Reviewed-on: https://review.gerrithub.io/369602
Reviewed-by: Tatyanka Leontovich <tleontovich@mirantis.com>
Tested-by: Tatyanka Leontovich <tleontovich@mirantis.com>
69 files changed