Update git submodules

* Update docs/submodules/yardstick from branch 'master'
  - Merge "Yardstick api database v2 model"
  - Yardstick api database v2 model

    JIRA: YARDSTICK-713

    We have api v2 for gui, and they are all based on the database model.

    Change-Id: I51b127588b0b84316acff8acf4a7886339646060
    Signed-off-by: chenjiankun <chenjiankun1@huawei.com>

diff --git a/docs/submodules/yardstick b/docs/submodules/yardstick
index 7949507..0832b64 160000 (submodule)
--- a/docs/submodules/yardstick
+++ b/docs/submodules/yardstick
@@ -1 +1 @@
-Subproject commit 7949507437f8b1b1d9100bd13cf2d90bae60279d
+Subproject commit 0832b64daeeae389db660d87c139e82c1c6593f8