Update git submodules

* Update docs/submodules/yardstick from branch 'master'
  - Merge "[docs] Updated baremetal instalation instructions"
  - [docs] Updated baremetal instalation instructions

    JIRA: YARDSTICK-1111

    Change-Id: Iefab24f74c87a0855c2d70090ac34256ffa9200c
    Signed-off-by: Chornyi, TarasX <tarasx.chornyi@intel.com>

diff --git a/docs/submodules/yardstick b/docs/submodules/yardstick
index 0aa73e8..5737506 160000 (submodule)
--- a/docs/submodules/yardstick
+++ b/docs/submodules/yardstick
@@ -1 +1 @@
-Subproject commit 0aa73e85efc60a9f5f0dc1f063aad1d342a123ca
+Subproject commit 5737506a8d085f9044b138cf63a811859ba4ac02