Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "Add the huawei-pod8 into CI pod list"
  - Add the huawei-pod8 into CI pod list

    Add huawei-pod8 into CI pod list for running
    the functest-kubernetes.
    Remove the arm-virtual3 pod from CI pod list.

    Change-Id: I0aec57f41fc4a49302e687a2600417eea6c29a0b
    Signed-off-by: Jingzhao Ni <jingzhao.ni@arm.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 4671a31..ae0c316 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 4671a311e897fea4d4805598f2599e8a1c7a598a
+Subproject commit ae0c3164e10f2cec0780431ca4aaae8e44fe074f