Update git submodules

* Update docs/submodules/yardstick from branch 'stable/euphrates'
  - Fio: support input job file configuration

    Change-Id: I4bb15a398819e54f7fb3e9eac17daa4059c03376
    Signed-off-by: JingLu5 <lvjing5@huawei.com>
    (cherry picked from commit a5d0491b47fd1bab27fa603353861ea8eaba8da5)

diff --git a/docs/submodules/yardstick b/docs/submodules/yardstick
index f34a98d..a5bfa22 160000 (submodule)
--- a/docs/submodules/yardstick
+++ b/docs/submodules/yardstick
@@ -1 +1 @@
-Subproject commit f34a98d4126f6736571ee2881e4a8cffa4975b5e
+Subproject commit a5bfa22b89d2ce357eca4d579e20cb7e210fc548