Update git submodules

Update git submodules

* Update docs/submodules/yardstick from branch 'stable/fraser'
  - Merge "Start nginx and uwsgi servicies only in not container mode" into stable/fraser
  - Start nginx and uwsgi servicies only in not container mode

    No need to execute nginx and uwsgi when running in container mode.

    JIRA: YARDSTICK-1179

    Change-Id: I253f3adab388a14886b70e6589936f6eb27ac4c0
    Signed-off-by: Stepan Andrushko <stepanx.andrushko@intel.com>
    (cherry picked from commit 3decdca3d0732a1df845650562e7bcb8fbfd87a7)