Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "Weekly Anteater Project Additions"
  - Weekly Anteater Project Additions

    https://wiki.opnfv.org/display/INF/Project+Roll+Out+for+Anteater

    Week begining July the 10th

    Change-Id: Ifc6e59f2298ae8d83679a3817c82a2cc6ec4acd6
    Signed-off-by: lukehinds <lhinds@redhat.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 9196f6f..7940c31 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 9196f6fe69e7ac1832ad5b9c6cb920b14dbc6c01
+Subproject commit 7940c31896fdad39c399126989a4e41055994185