Add the yardstick invokation script

Add the yardstick invokation script

This script does the real yardstick works. It downloads the yardstick code,
and run the cyclictest test case.

This scripts is copied by the cyclictest.sh to the container image and
is executed from the yardstick container.

It's based on a script from QiLiang when discussing the integration with
yardstick.

Change-Id: I5920a21401a3e442d5f4fada05d9e789f2a99add
Signed-off-by: Yunhong Jiang <yunhong.jiang@linux.intel.com>
Signed-off-by: QiLiang <liangqi1@huawei.com>