Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Apex: Fix stale GS pulls on artifacts

    There seems to be some delay in updating the HTTP server for GS which
    causes an old version of snapshot to be used. This change replaces using
    HTTP with gsutil to ensure we get the latest artifacts

    Change-Id: Iccca64aa9e904221621dfb2cb7471d24a3b3f4d9
    Signed-off-by: Tim Rozet <trozet@redhat.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index d295d71..27d43c8 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit d295d714eb425ce59fe11f2dd30963beabcb04b7
+Subproject commit 27d43c8829c848f81251f5c01c50a8bcde941ee8