Supports basic/special/all.
special - will fetch the statistics of special central services like presence analytics(pa), ucc, clarity etc
basic - will fetch the statistics of device management service licenses.
all - will fetch both of these license types.
Also supports multi tier license types such foundation_ap, advanced_switch_6300, foundation_70XX etc.

Service type: pa/pa,clarity foundation_ap, advanced_switch_6300, foundation_70XX etc