Update git submodules

* Update docs/submodules/yardstick from branch 'stable/euphrates'
  - bugfix: tc054 default value is wrong

    management route ip is not common in most SUTs, so it should
    be removed.
    also huawei pod1 ipmi info should updated so this test case
    can be added into ci later

    Change-Id: I3a29c59c473ee7087d4d61753ffc955b061571fb
    Signed-off-by: rexlee8776 <limingjiang@huawei.com>
    (cherry picked from commit 8701e63e3daf508d8e3482f0a344554d17ff6e24)

diff --git a/docs/submodules/yardstick b/docs/submodules/yardstick
index 7e0574b..5c5f1f8 160000 (submodule)
--- a/docs/submodules/yardstick
+++ b/docs/submodules/yardstick
@@ -1 +1 @@
-Subproject commit 7e0574b0ef0c8aa7c52865f4d80f96018bd5821b
+Subproject commit 5c5f1f8029cb1ca6c43838a2dc8bcd40f0c49976