Update git submodules

* Update docs/submodules/releng from branch 'master'
  to ee38f2973bb4e3e1c62b733ab640c606dab6aa60
  - Merge "Turn debug on in gsutil (Functest jjbs)"
  - Turn debug on in gsutil (Functest jjbs)

    Change-Id: Ib387b3c7c6aeaf82283b95e522514c60a0b1eac8
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index d9cc90d..ee38f29 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit d9cc90d067ea86d3c07685448491570d4ba4a7af
+Subproject commit ee38f2973bb4e3e1c62b733ab640c606dab6aa60