Update git submodules

* Update docs/submodules/releng from branch 'master'
  to a7bdad27380d1623d6f86e49a78c88b871436743
  - temporarily revert runner

    Change-Id: I08b9aa13a77b59477f6089ffb5ac72628608197a
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 7f42a95..a7bdad2 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 7f42a9591ca937f81092929356f986a3df111e0c
+Subproject commit a7bdad27380d1623d6f86e49a78c88b871436743