Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Apex: Change verify job to use tempest

    Tempest is maintained for different versions of openstack which we need
    to be able to test master and queens in Apex for XCI.

    Change-Id: I1ab6500964a93b74f1800e9bdfea9ddfb1157f70
    Signed-off-by: Tim Rozet <trozet@redhat.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index eb7e718..f527b75 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit eb7e71885b912b5b81b11eeb5b1097310c349b90
+Subproject commit f527b7511f5302273c665a1b0bedcfbd9664f761