Update git submodules

* Update docs/submodules/releng from branch 'master'
  - jjb: xci: Use core OpenStack installation by default

    We do not need all the components installed when deploying OpenStack
    so we can speed up the jobs by removing some of them.

    Change-Id: I19120915d0ef7c59b8b470c5fb87e9c0aa3e3673
    Signed-off-by: Markos Chandras <mchandras@suse.de>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 9bf2281..f832a32 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 9bf228149a971b798078001bcbf269620ccc6a4a
+Subproject commit f832a32e30babffa2d8c71b4102af01c7eaebbf2