agent.controller.hostName
This is the host name or the IP address of the Controller. Example values are 192.168.1.22,
myhost or myhost.abc.com. This is the same host that you
use to access the Splunk AppDynamics browser-based user interface. For an on-premises
Controller, use the value for application server hostname that was configured when the
Controller was installed.
This setting is required.