This table stores the last policy enforcement
state of client in the controller. The state here is
represented as a string. For example the state can be
'RUN','WEBAUTH_REQUIRED' etc.
Entries are automaticaly added to this table when a
802.11 client associates to a controller.
Entries in this table are automaticaly deleted by
the controller when the 802.11 client disassociates
from the controller.