Update git submodules

* Update docs/submodules/releng from branch 'master'
  to 196ce49240ed59511a4b7f908a43205f9aa59960
  - Merge "Protect if {volumes} or env is None (zip part)"
  - Protect if {volumes} or env is None (zip part)

    Change-Id: Id17fc3b4c5420174f48984ffe8c48054f8e6a30e
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 0b20199..196ce49 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 0b20199a7300d3e5f7752f698dc01b75b31ca1ce
+Subproject commit 196ce49240ed59511a4b7f908a43205f9aa59960