Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "Donot exit if k8s tests fail"
  - Donot exit if k8s tests fail

    1. Add 'set +e' before running k8s tests, then the following builder
       of functest-store-results will be executed.
    2. Remove the logic of managing k8s scenario from functest-alpine.sh

    Change-Id: I9a269fc46e45d1db6af741775d475e887ebc79c7
    Signed-off-by: Linda Wang <wangwulin@huawei.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 98cbaa7..a89f725 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 98cbaa71f0982fd31c1600067552a3da6d795483
+Subproject commit a89f725cd5192355555b36169aaaad76712de331