Update git submodules

* Update docs/submodules/releng from branch 'master'
  to 29091f057109344db49a956f663ca16c738f7a3b
  - Merge "Add Lint process to Kuberef"
  - Add Lint process to Kuberef

    Lint tools allow to check syntax errors and verify best practices on
    coding. This change includes a Jenkins Job for running those tools
    on every change submitted.

    Signed-off-by: Victor Morales <v.morales@samsung.com>
    Change-Id: I0a4a5378a8e75322993be049b961886d5595c0db

diff --git a/docs/submodules/releng b/docs/submodules/releng
index b5e9c78..29091f0 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit b5e9c78df69487adcf1e48cffe1d0034fffc688e
+Subproject commit 29091f057109344db49a956f663ca16c738f7a3b