Update git submodules

* Update docs/submodules/apex from branch 'master'
  - Adds openstack-utils to overcloud

    Package allows user to do openstack-status to see state of services.

    JIRA: APEX-352

    Change-Id: Ie68cad5745786c8764ae20c2d3ad26dd05e5480b
    Signed-off-by: Tim Rozet <trozet@redhat.com>

diff --git a/docs/submodules/apex b/docs/submodules/apex
index 2719f32..322f29c 160000 (submodule)
--- a/docs/submodules/apex
+++ b/docs/submodules/apex
@@ -1 +1 @@
-Subproject commit 2719f32c6d8bd4d69ebdd5215d43959d224ffc76
+Subproject commit 322f29c64625fdaa42f76d226860bcbb85690d6c