Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Change test job to use new publisher

    Change-Id: I9da4c2587874a7ea4ca0f2b90dd7ec15c9e05e34
    Signed-off-by: Yolanda Robla <yroblamo@redhat.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 70978b8..593ef62 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 70978b8cb03760f5d997f9fd8fc7b4e4a11e5941
+Subproject commit 593ef62611a16ac750a5eb068b4d2aed5984d6f1