Update git submodules

* Update docs/submodules/yardstick from branch 'stable/fraser'
  - Bug fix in using Unixbench

    JIRA: YARDSTICK-1117

    This bug will cause the error in running unixbench.
    "no such file named ./run"
    So we have to fix it.

    Change-Id: I141fcb5567fbb0e3df97aee677cb946a25a9788e
    Signed-off-by: liyin <liyin11@huawei.com>
    (cherry picked from commit 941d3b0c0fa4583c49fa6fd2aa3686a1b55ab187)

  - 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)

diff --git a/docs/submodules/yardstick b/docs/submodules/yardstick
index ead9006..64c5642 160000 (submodule)
--- a/docs/submodules/yardstick
+++ b/docs/submodules/yardstick
@@ -1 +1 @@
-Subproject commit ead90064d12be552bd334828d41ffffa75fad01b
+Subproject commit 64c5642f0c5152ae5de728466ab3f6be4c0e24d5