Update git submodules

* Update docs/submodules/releng from branch 'master'
  to a9a4e3fa28777248393139a826726a0522957582
  - Merge "Publish docx and single rst to testresults.opnfv.org"
  - Publish docx and single rst to testresults.opnfv.org

    Change-Id: Ic971a395ce53af6c3256615bef9510b54ff95add
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index f07d94d..a9a4e3f 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit f07d94d698a666840260b2b972cf48e2cf86338e
+Subproject commit a9a4e3fa28777248393139a826726a0522957582