* Update docs/submodules/yardstick from branch 'master'
- Merge "Added TC for vFW in heat context with ixia TG"
- Added TC for vFW in heat context with ixia TG
- added common method to get relative paths
- added 'Ixia' APP_NAME
Change-Id: I7966798bab71af66d3efbeb1e13b07e8fbb41e88 Signed-off-by: Maciej Skrocki <maciej.skrocki@intel.com>