Update git submodules

* Update docs/submodules/apex from branch 'master'
  - Merge "Add argument types for deploy.py"
  - Add argument types for deploy.py

    Add data type for integer arguments to avoid str to int comparison exceptions.

    Change-Id: Ifa40e1cc8588df6d618185882bba71f7ce7b9a1d
    Signed-off-by: Feng Pan <fpan@redhat.com>

diff --git a/docs/submodules/apex b/docs/submodules/apex
index 614d9d9..4616c9c 160000 (submodule)
--- a/docs/submodules/apex
+++ b/docs/submodules/apex
@@ -1 +1 @@
-Subproject commit 614d9d9b9f242a7a55fb3963395f4a5fe3edb8fe
+Subproject commit 4616c9c10d574fad8fffa6c827c27a44d406068c