Update git submodules

Update git submodules

* Update docs/submodules/yardstick from branch 'master'
  - Merge "Bugfix: to list all used loop device"
  - Bugfix: to list all used loop device

    Bug fix in script "build_yardstick_image.yml", to

    - Use option "-a" to list all used loop devices, to be more compatible.
    - Ignore the error and continue, if the debug command failed.

    JIRA: YARDSTICK-1121

    Change-Id: I24aaebb2ffe3107ca5c619401725aa8c8e1af295
    Signed-off-by: ting wu <ting.wu@enea.com>
  - Bugfix: k8 scenario fix

    JIRA: YARDSTICK-1109

    Change-Id: Ic61a63099c3d2d4af5fa5634299e4b2946d53eaf
    Signed-off-by: rexlee8776 <limingjiang@huawei.com>
    (cherry picked from commit 3b1316647b50bc3bbb1eb6216aa07fd4dff34edf)

  - docker/supervisor.sh: Fix condition block end

    Fixes: 18546b4f

    Change-Id: I51fcb48e790ff7c57273a3f6712ccb2b9bc4aa32
    Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>
    (cherry picked from commit ead90064d12be552bd334828d41ffffa75fad01b)

  - [AArch64] Dockerfile: Fix malformed patch

    Change-Id: Ia2dfc6c4def8e71e36747b8f27cbf22700f676b1
    Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>
    (cherry picked from commit 161f7d676b4404a5445681a7871e086b751fdafc)