This object is used to specify the list of modules per
client whose messages will be stored by the controller.
Any combination of the modules can be set.
'dot11' - This value represents the module in controller
responsible for handling the 802.11 messages.
'dot1x' - This value represents the module responsible
for handling the extensible authentication protocol
related messages.
'pem' - This value represents the module responsible for
handling the policy enforcement module.
'dhcp' - This value represents the module responsible for
handling dhcp related messages.
'aaa' - This value represents the module responsible for
handling radius related messages.