Update git submodules
* Update docs/submodules/yardstick from branch 'stable/danube'
- Merge "Set work directory in Yardstick container" into stable/danube
- Set work directory in Yardstick container
JIRA: YARDSTICK-608
Set the work directory to /home/opnfv/repos in yardstick docker container to
help users better understand file structure.
This is a improvement related with document improvement.
Change-Id: Ief4b76e6d6898ceab4a546574f5a09d51eb0d945
Signed-off-by: JingLu5 <lvjing5@huawei.com>
(cherry picked from commit
343970dc9c6193e28863e4ab8bae801b5060ae6a)