Update git submodules

* Update docs/submodules/releng from branch 'master'
  to 0a7bbf9c464b2647ea9cef65f734c126f6dc0f45
  - Merge "Add the missing test cnf_conformance"
  - Add the missing test cnf_conformance

    Change-Id: I53fcea6981243e617763e75dd6a9536a7511c35e
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 456b942..0a7bbf9 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 456b9423aa58dea12867495ef611933aae8f25ab
+Subproject commit 0a7bbf9c464b2647ea9cef65f734c126f6dc0f45