Update git submodules

* Update docs/submodules/apex from branch 'master'
  - Merge "Fixes missing iso packages and idempotency of virt resources"
  - Fixes missing iso packages and idempotency of virt resources

    Python packages for ansible (py2.x) were missing causing ansible to
    fail.  This patch adds those packages to the ISO and deploy
    dependencies playbook.  Also includes fixes for deploy_dependencies
    playbook for virt resources to make them idempotent by removing
    using 'command' and instead just declaring 'state'.

    Change-Id: I9311184a6f3c40ead0a8ba16fa0b61667876cf12
    Signed-off-by: Tim Rozet <trozet@redhat.com>

diff --git a/docs/submodules/apex b/docs/submodules/apex
index dd66953..ceb8b28 160000 (submodule)
--- a/docs/submodules/apex
+++ b/docs/submodules/apex
@@ -1 +1 @@
-Subproject commit dd669539ffa924a06f04237a2177422403d82c7b
+Subproject commit ceb8b2863c0483fd850d49c7545a8b8fc6a34bbd