Fix #47 get period name instead of period object
Fix #47 get period name instead of period object

Signed-off-by: David GUENAULT <9882365d879229bc3b82bdb932e4144fb10992c6@gmail.com>

staute/shinken-mod-livestatus,shinken-monitoring/mod-livestatus,kaji-project/shinken-mod-livestatus,kaji-project/shinken-mod-livestatus,staute/shinken-mod-livestatus,shinken-monitoring/mod-livestatus