Update git submodules

* Update docs/submodules/releng from branch 'master'
  to c5bcede7f9387edd8a24aec418b0c2584b06aa3a
  - Skip lf-build5 to verify jobs

    Jobs cost cannot work in lf-build5 (virtualenv isn't pinned)

    Change-Id: Icd25865bd7f09dffe7956d73d643f5fef6b66f02
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 07e7743..c5bcede 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 07e7743c36b2d3f0cad816f1287a875a252c86f9
+Subproject commit c5bcede7f9387edd8a24aec418b0c2584b06aa3a