Update git submodules

* Update docs/submodules/releng from branch 'master'
  to 7499d6be5cb22a83a5a4fdd6ceeebbf1d7b1abdc
  - Remove EOL distrib

    It also takes into account that Ansible collections
    are already installed.

    Change-Id: I6bad704228c3e79f21e67f6590bee422fd4c4740
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 5528c82..7499d6b 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 5528c8291446f07d973f50c149b1bb611236b0dd
+Subproject commit 7499d6be5cb22a83a5a4fdd6ceeebbf1d7b1abdc