Update git submodules

* Update docs/submodules/yardstick from branch 'master'
  - Merge "Add API(v2) to load images"
  - Add API(v2) to load images
    
    JIRA: YARDSTICK-751
    
    API: /api/v2/yardstick/images/action
    METHOD: POST
    PARAMS:
    {
        'action': 'load_image'
    }
    
    Change-Id: I9554f35c679ae2a861c7922080aa54a1ffc5bac7
    Signed-off-by: chenjiankun <chenjiankun1@huawei.com>
    

1 files changed, 0 insertions, 0 deletions

diff --git a/docs/submodules/yardstick b/docs/submodules/yardstick
-Subproject 2d0247646d8f5b46c41f8429f439133745c5ed1
+Subproject be2da4d7ef13f61cfcd9b591a9b00579b896213