Update git submodules

* Update docs/submodules/releng from branch 'master'
  to ea0d87c0ecd4daf814968cef9d2236f866163fe7
  - Build docker container on lf-build2

    ericsson-build4 seems in a bad shape

    Change-Id: I0083308cda1c33f8a750387641d1e7d7dfcba3e5
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 3f2b6ed..ea0d87c 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 3f2b6edc49ca2b557db76c6f03ed8b88e012888e
+Subproject commit ea0d87c0ecd4daf814968cef9d2236f866163fe7