Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "Fix Yamllint violations for jjb/functest"
  - Fix Yamllint violations for jjb/functest

    JIRA: RELENG-254

    Change-Id: I89043a1149360d587588e8c887f88cc5192c1692
    Signed-off-by: Trevor Bramwell <tbramwell@linuxfoundation.org>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index f9fe2c8..03adf9c 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit f9fe2c801bc5420d17a36a3b43923b04b26e50fd
+Subproject commit 03adf9c57ebb54b8019188adadb3b23346103779