- added 'last_contact' field (keep track of last time this node called GetSlivers()) - added helper function update_last_contact()
- added 'last_contact' field (keep track of last time this node called GetSlivers())
- added helper function update_last_contact()


dreibh/planetlab-lxc-plcapi,dreibh/planetlab-lxc-plcapi,dreibh/planetlab-lxc-plcapi,dreibh/planetlab-lxc-plcapi