Update git submodules

Update git submodules

* Update docs/submodules/releng-xci from branch 'master'
  - Merge "xci: playbooks: Fixes various ansible-lint warnings"
  - xci: playbooks: Fixes various ansible-lint warnings

    In preparation for adding support for the 'ansible-lint' tool we fix
    various problems in our playbooks to make the tool happy before we make
    it mandatory.

    Some of the problems that are fixed here are

    - [ANSIBLE0011] All tasks should be named
    - [ANSIBLE0012] Commands should not change things if nothing needs doing
    - [ANSIBLE0013] Use shell only when shell functionality is required
    - [ANSIBLE0010] Package installs should not use latest

    installer-type:osa
    deploy-scenario:os-nosdn-nofeature
    Change-Id: I66c759d3932a414b81b2846393d2d98ce80c0b6d
    Signed-off-by: Markos Chandras <mchandras@suse.de>