Update git submodules

* Update docs/submodules/apex from branch 'master'
  - Fixes external network with baremetal interface

    Change-Id: Icd65ffbd14dee603e5b2a0a42e9d0cdfd98c694c
    Signed-off-by: Tim Rozet <trozet@redhat.com>

diff --git a/docs/submodules/apex b/docs/submodules/apex
index 002537a..583ae93 160000 (submodule)
--- a/docs/submodules/apex
+++ b/docs/submodules/apex
@@ -1 +1 @@
-Subproject commit 002537a8dd9dde4f488e2be75f0f69ea43b500ba
+Subproject commit 583ae93f658e84a349638aeb33209aaae6cad63f