Update git submodules

* Update docs/submodules/yardstick from branch 'master'
  - Add API(v2) to upload openrc

    JIRA: YARDSTICK-719

    API: /api/v2/yardstick/environments/openrcs/action
    METHOD: POST
    PARAMS:
    {
        'action': 'upload_openrc',
        'args': {
            'file': file,
            'environment_id': environment_id
        }
    }

    Change-Id: If367904a2d0c2d4a192fdc87a8da21ac6549269e
    Signed-off-by: chenjiankun <chenjiankun1@huawei.com>

diff --git a/docs/submodules/yardstick b/docs/submodules/yardstick
index e1d830c..1a83219 160000 (submodule)
--- a/docs/submodules/yardstick
+++ b/docs/submodules/yardstick
@@ -1 +1 @@
-Subproject commit e1d830c41c0f67b631b5b83f295f9dd1d6f6f0f1
+Subproject commit 1a83219677fd0ce48f59e09f5a787d8296ba9261