Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "openci: Add skeletons for ONAP autorelease and promotion jobs"
  - openci: Add skeletons for ONAP autorelease and promotion jobs

    The jjb will be proposed to ONAP Releng once it is verified on OPNFV
    Jenkins.

    The flow is
    - ONAP autorelease job publishes an ArtifactPublishedEvent to make the
    availability of a new version that is tested known to the world
    - ONAP promote job gets triggered by a ConfidenceLevelModifiedEvent
    published by OPNFV CI to promote autorelease artifact further.

    The prototype doing realistic stuff will be built on top of these jobs
    and
    - parse the triggering event to find the location of autorelease
    artifact
    - download the artifact for composing ONAP scenario
    - run the deployment and testing of ONAP scenario

    Please note that this change just adds the basic structure for the jobs
    to share the idea. Further changes will add triggering, message
    costruction, and publishing.

    Change-Id: Ib8939ab44d664ff71f472db66a0e2171ed7b56c5
    Signed-off-by: Fatih Degirmenci <fdegir@gmail.com>
    Signed-off-by: Trevor Bramwell <tbramwell@linuxfoundation.org>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 6010afd..e2b8baf 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 6010afdae373be90674c131d0661cf7dab08e544
+Subproject commit e2b8baf33ab43903a864bfec639c0f7b94b6bb26