* Update docs/submodules/yardstick from branch 'master'
- Merge "Tweaked nsb_setup to always re-download latest container and re-create the container."
- Tweaked nsb_setup to always re-download latest container and re-create the container.
Change-Id: I21204ddf97e2cccc2d5a762f5d910068bda1a948 Signed-off-by: Maciej Skrocki <maciej.skrocki@intel.com>