Update git submodules

* Update docs/submodules/apex from branch 'master'
  - Open port 8101 on controllers for karaf

    By default 8101 (karaf shell) is blocked on controllers. In Apex we
    advertise in our user guide (and tools scripts) the ability to connect
    to karaf shell. It is also required to run CSIT. This patch opens the
    port when ODL is deployed.

    Change-Id: Ib3ece41f19607bafc329d9de390cf774766a26cd
    Signed-off-by: Tim Rozet <trozet@redhat.com>

diff --git a/docs/submodules/apex b/docs/submodules/apex
index 3af3e7f..eafc77d 160000 (submodule)
--- a/docs/submodules/apex
+++ b/docs/submodules/apex
@@ -1 +1 @@
-Subproject commit 3af3e7faee935ed403ea52ba5de4e2b9d9b41178
+Subproject commit eafc77d7fdc0f3f418941b3ac20a1dcc9180589b