Update git submodules

* Update docs/submodules/yardstick from branch 'stable/fraser'
  - Bugfix: ansible can't not run without config

    JIRA: YARDSTICK-1135

    Ansible need ansible.cfg when run in the remote node.
    However the file name is wrong. Need:
    setup.cfg -> ansible.cfg

    Change-Id: Ifa674fb624ca83d90c3ac9ad3bfe148013bf8bfd
    Signed-off-by: chenjiankun <chenjiankun1@huawei.com>
    (cherry picked from commit 170842f20426ad244f3e49b3780b0256302b0be3)

diff --git a/docs/submodules/yardstick b/docs/submodules/yardstick
index 5a18f54..bd2064d 160000 (submodule)
--- a/docs/submodules/yardstick
+++ b/docs/submodules/yardstick
@@ -1 +1 @@
-Subproject commit 5a18f5420f9077557d9f50ebe420b66813ebee49
+Subproject commit bd2064d2862e2a50566394eba9ce15a0d1d8db40