Removing tab
Moved the responsibilty for loading the conf/switches.conf and var/switches.cong from pf::SwitchFactory to pf::ConfigStore::Switch and pf::ConfigStore::SwitchOverlay
Also moved responsiblity of adding the overlayed information to pf::SwitchFactory instead of the pf::radius
Added new attributes _id _switchIp _switchMac and made _ip an alias for _switchIp