Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Functest: fixes fetching os creds

    Since jenkins just imports the bash script at upload time, referencing
    another script in the releng repo inside of bash doesn't work.  We need
    to split them out into their own builder includes.

    Change-Id: Id120a338ae5ec48eaa285681463bff01677bf316
    Signed-off-by: Tim Rozet <trozet@redhat.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index b913330..69160ba 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit b91333032a4e42ecf0fe591e58068b24cf6a0c02
+Subproject commit 69160baaeffd63bc5d1fd3eabf41e3879a8f817f