Update git submodules

* Update docs/submodules/apex from branch 'master'
  - Merge "Couple cleanups related to ocata update"
  - Couple cleanups related to ocata update

    - remove glance v2 enable
    - remove bgpvpn

    Change-Id: I2e09067e4f81c8a48e8f12475451b2a3c40289a7
    Signed-off-by: Dan Radez <dradez@redhat.com>

diff --git a/docs/submodules/apex b/docs/submodules/apex
index b63857e..2f1a9dc 160000 (submodule)
--- a/docs/submodules/apex
+++ b/docs/submodules/apex
@@ -1 +1 @@
-Subproject commit b63857ee231134fe9af6c5667d40a8f4f2b8555d
+Subproject commit 2f1a9dc491f55b5890a030a8ee36faa15de57b9e