Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "[Functest] Add script for running new Alpine containers"
  - [Functest] Add script for running new Alpine containers

    Change-Id: I96c7144578ee2e1f842e4bd22ffb79b9e1e54e4c
    Signed-off-by: jose.lausuch <jose.lausuch@ericsson.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 6b381a3..1633236 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 6b381a30d4dfc05d1569d2115c024633de35c2b7
+Subproject commit 16332362c6b87c391018d08fe20fc9eee7bd5a0a