Update git submodules

* Update docs/submodules/releng from branch 'master'
  to 80be2bbf6021d83002cbb96e116262f0f12e6ebd
  - Clean obsolete jjbs

    They should have been cleant when closing the projects.

    Change-Id: Id00da883e6ea14631f2098e40978bcf793d5636b
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 6cb4423..80be2bb 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 6cb4423baf4e254f7dd0b84d44a027a72cfb9583
+Subproject commit 80be2bbf6021d83002cbb96e116262f0f12e6ebd