Update git submodules

* Update docs/submodules/yardstick from branch 'stable/fraser'
  - tc046 kill keystone process condition incorrect - dovetail

    Change-Id: If01abfd5a99b4cea74f835e258f3a982af9446cd
    Signed-off-by: rexlee8776 <limingjiang@huawei.com>
    (cherry picked from commit e5cf82b0514c88a2aca87a2bbb98c8cc1d751ecb)

diff --git a/docs/submodules/yardstick b/docs/submodules/yardstick
index 5fb2138..6c10a2d 160000 (submodule)
--- a/docs/submodules/yardstick
+++ b/docs/submodules/yardstick
@@ -1 +1 @@
-Subproject commit 5fb2138dd163c83fa73e8766fc206d1c14409754
+Subproject commit 6c10a2d9cc3fe10e0bdd73a0985ab767b9479afc