Update git submodules

* Update docs/submodules/apex from branch 'stable/euphrates'
  - Merge "Fix interface role mapping config for odl-fdio scenarios" into stable/euphrates
  - 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>
    (cherry picked from commit da99ee8cf99824a7ee5ff19544d3eec4788edd68)

diff --git a/docs/submodules/apex b/docs/submodules/apex
index 658392b..2f1c99d 160000 (submodule)
--- a/docs/submodules/apex
+++ b/docs/submodules/apex
@@ -1 +1 @@
-Subproject commit 658392b4f6972711ff4ddff85a5c4f2107f05ab4
+Subproject commit 2f1c99daeee9cf0e89a8e833e034e7a5979ae894