Update git submodules

* Update docs/submodules/releng from branch 'master'
  to cbdd1a0c0353e37a90f584346d0df218703d262a
  - Install ansible by pip if needed

    Change-Id: I3d48e2d796b5ecbdc01fb41a3c5bf648f68fc376
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 9c3346e..cbdd1a0 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 9c3346e5ed288decb1227f230836c606ebeb6be9
+Subproject commit cbdd1a0c0353e37a90f584346d0df218703d262a