Update git submodules

* Update docs/submodules/releng from branch 'master'
  to 5c8d3206fd8fcfda8bb275b551e349ce59ecc10c
  - Merge "Add Kubernetes deployment scenario"
  - Add Kubernetes deployment scenario

    Change-Id: I2efac150d325ce0b56bcb424213b87a649d53f1c
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 78d65f8..5c8d320 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 78d65f8c36d3ccaf6a0e940b10ff87a8fedf51bd
+Subproject commit 5c8d3206fd8fcfda8bb275b551e349ce59ecc10c