Update git submodules

* Update docs/submodules/apex from branch 'master'
  - Merge "Fix interface role mapping config for odl-fdio scenarios"
  - Fix interface role mapping config for odl-fdio scenarios

    This patch fixes a bug in deploy config function that will make
    performance parameters overwrite interface role mapping config for honeycomb.

    apex-os-net-config: Ifa3b18aa6370c79ad6ad3ce983f1648ff0d1d79d

    Change-Id: Icdb7603577bc7edf1959238ddd3d686c310544ce
    Signed-off-by: Feng Pan <fpan@redhat.com>

diff --git a/docs/submodules/apex b/docs/submodules/apex
index 550c8c7..5a9a646 160000 (submodule)
--- a/docs/submodules/apex
+++ b/docs/submodules/apex
@@ -1 +1 @@
-Subproject commit 550c8c756b04af4e4038e42ea17478e851b2341d
+Subproject commit 5a9a6460ab27d758ac72321998a5ffda3e98e931