Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "Add Euphrates pages for reporting"
  - Add Euphrates pages for reporting

    Change-Id: Iee4c54801d839be949495360141d4ae9353e5ecc
    Signed-off-by: Morgan Richomme <morgan.richomme@orange.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 55746e5..f63348d 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 55746e543b9a56d7648d28620db90688cc2ed3d8
+Subproject commit f63348da4724977846b27e4a59e125c16ce7faf1