* Update docs/submodules/yardstick from branch 'master'
- Merge "Add a new monitor type: MultiMonitor that can run any number of other monitors at the same time."
- Add a new monitor type: MultiMonitor that can run any number of other monitors at the same time.
JIRA: YARDSTICK-397
Change-Id: Ic5cb79f0820029e306373abead1ea43fac9abee2
Signed-off-by: HuanLi <lihuansse@tongji.edu.cn>
-Subproject commit d002db9a10fed7cdba2cc43a8c064864250994ce
+Subproject commit 87559e992c1f68559950b258146a530c49db9df0