Update git submodules

* Update docs/submodules/releng-xci from branch 'master'
  - Merge "docs: Add info about kubernetes support"
  - docs: Add info about kubernetes support

    1. Introduce the installer used to deploy kubernetes
    2. Introduce XCI how to deploy the kubernetes

    Change-Id: I052b4547d763d19b8d6136a48d4804443921b021
    Signed-off-by: wutianwei <wutianwei1@huawei.com>

diff --git a/docs/submodules/releng-xci b/docs/submodules/releng-xci
index cbb8d07..5dcc328 160000 (submodule)
--- a/docs/submodules/releng-xci
+++ b/docs/submodules/releng-xci
@@ -1 +1 @@
-Subproject commit cbb8d07695bd5cbdee9b11d7fc758c846d3c0915
+Subproject commit 5dcc328f7506166e049c0310d5d8f70fa4579d45