Update git submodules

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>