Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "Apply docker config adaptations to alpines"
  - Apply docker config adaptations to alpines

    regression reported by barometer project
     1) --privileged=true no more set in docker run
     2) wrong INSTALLER_IP -e INSTALLER_IP=192.168.122.169
     3) ssh_key no more mounted -v /root/.ssh/id_rsa:/root/.ssh/id_rsa

    Change-Id: Iccda9d57b7ea4c346ff26e9b2f74320bfe7eec95
    Signed-off-by: Morgan Richomme <morgan.richomme@orange.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index f9a4b30..269aaa6 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit f9a4b3064d986a7a1578417a8349cabd27612d6a
+Subproject commit 269aaa60e72d672bcd66e03a8eaf30110df741a5