Currently, this recipe only supports daily scheduling via a cron job.
This commit adds support for systemd in the recipe, as the feature is
already supported on upstream. When the corresponding distro feature is
enabled the systemd variant will be used. The timer granularity and its
accuracy are also configurable.
Signed-off-by: Romain Perier <romain.perier@collabora.com> Signed-off-by: Ross Burton <ross.burton@intel.com>
