Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "add k8s scenario to compass4nfv"
  - add k8s scenario to compass4nfv

    Change-Id: Ie146c6da6d554c5e5285c73c52beae9f4043eff1
    Signed-off-by: wutianwei <wutianwei1@huawei.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index eb39f29..f9a4b30 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit eb39f29dd8367c761eae9b00a889cfea498f0550
+Subproject commit f9a4b3064d986a7a1578417a8349cabd27612d6a