Update git submodules

* Update docs/submodules/releng from branch 'master'
  - armband-deploy.sh: sudo ci/deploy.sh

    New MCP deploy scripts have a hard requirement on running as root.
    Bring back sudo for the `ci/deploy.sh` invocation, aligning with
    Fuel@OPNFV.

    NOTE: This can be later avoided/reverted if we can guarantee the
    "jenkins" user has sudo rights, even without a tty present.

    Change-Id: Ibec7b14e9174a7f482609890e5e68912931a8d05
    Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index c6cb6fa..8f0e845 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit c6cb6fae1560345d44a457e990f009b350835a1e
+Subproject commit 8f0e845255585fde306a46be8011c6bf06bd2137