Update git submodules

* Update docs/submodules/yardstick from branch 'master'
  - Merge "Create test suite k8-nosdn-lb-noha run with k8s context"
  - Create test suite k8-nosdn-lb-noha run with k8s context

    JIRA: YARDSTICK-800

    We have k8-nosdn-lb-noha scenario with kubernetes deployment.
    So we need to add k8-nosdn-lb-noha test suite to run test case.

    Change-Id: Id6dc73ad999733ddfa2e03673c20f7e92a8250a3
    Signed-off-by: chenjiankun <chenjiankun1@huawei.com>

diff --git a/docs/submodules/yardstick b/docs/submodules/yardstick
index 1c587f5..718610b 160000 (submodule)
--- a/docs/submodules/yardstick
+++ b/docs/submodules/yardstick
@@ -1 +1 @@
-Subproject commit 1c587f5c883e49ba6457925d06b0ce4271d345a6
+Subproject commit 718610b927218906583b474019b3834def8637de