Add Spirent Landslide TG API
New TG class "LandslideTrafficGen" represents an interface to use Spirent
Landslide API to configure and execute vEPC test cases on
hardware/software Spirent environment. For that purpose this class and its
helper classes use Spirent Landslide REST API calls and Landslide TCL API
calls via library module lsapi.py.
Change-Id: Ib6560d5cd2483c6c9f5c95568345ac39bfebbd4d
Signed-off-by: Emma Foley <emma.l.foley@intel.com>
Signed-off-by: Orest Voznyy <orestx.voznyy@intel.com>