Update git submodules

Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "prototypes: xci: xci-deploy: Do not use sudo when connecting to remote hosts"
  - prototypes: xci: xci-deploy: Do not use sudo when connecting to remote hosts

    In preparation for running xci-deploy as normal user, we do not need to
    gain elevated privileges in order to connect to remote hosts. SSH keys
    will be placed in user's ssh directory so we can ssh as normal user.

    Change-Id: Ieb705515ec191955a646839e8f195d089df184bd
    Signed-off-by: Markos Chandras <mchandras@suse.de>