Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Functest: Adds failure checking + fixes fetch os creds

    Change-Id: Ib8a3ff3a747be55d8e23513bd028d934fef02eb8
    Signed-off-by: Tim Rozet <trozet@redhat.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index efe68a7..ffb2f32 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit efe68a7d2781f79b240a6f1bd3a1dd3798775df0
+Subproject commit ffb2f32f8dccad3f892dd137a797d7ccd8bd8243