This an action object which is used to temporarily enable/disable a
real server. The real server will be returned to its configured
operational mode when the switch is reset. Setting the value to
'cookiepersistant' allows cookie persistent HTTP 1.0 sessions
when the real server is offline.'fastage' option is for removing the
existing sessions. And 'cookiepersistentfastage' allows cookie
persistent sessions and remove the existing sessions when real server is offline.