Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "auto: verify and merge jobs"
  - auto: verify and merge jobs

    Initial configuration of Auto specific verify and merge jobs
    triggered by gerrit events.

    Change-Id: I2d0fc7af31b1ec01f9a59eae875eb2df193d4fcb
    Signed-off-by: Martin Klozik <martin.klozik@tieto.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index a50d18a..c0e7b09 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit a50d18ac8345dc3607f2639e7753dbba8465edbb
+Subproject commit c0e7b09b0a23ba6cc311f9684a94813a76e96a14