Update git submodules

* Update docs/submodules/apex from branch 'master'
  - Generalization of recursive function

      Now, SDN_MAP is not needed to have a boolean true
      value, but it will check internally posible value formats
      such dicts and tuples.

    Change-Id: Idaf492952a7dd9e48e16f42dcbf5c59d981dd535
    Signed-off-by: Ricardo Noriega <rnoriega@redhat.com>

diff --git a/docs/submodules/apex b/docs/submodules/apex
index f6dbb39..b047099 160000 (submodule)
--- a/docs/submodules/apex
+++ b/docs/submodules/apex
@@ -1 +1 @@
-Subproject commit f6dbb3929d904b4d5a9ee01f8270051e29ac1ec3
+Subproject commit b047099b609eac330486f23913e8046d0f22c1ab