Update git submodules

* Update docs/submodules/apex from branch 'master'
  - Merge "Tiny fix for easy install scirpt"
  - Tiny fix for easy install scirpt

    - add several dependent packages
    - fix random no deploy log display
    - chmod +x simple_deploy.sh

    Change-Id: If18114b9fe8ba527abee907fa14eecf93beba098
    Signed-off-by: QiLiang <liangqi1@huawei.com>

diff --git a/docs/submodules/apex b/docs/submodules/apex
index 85d68ef..68bb8c9 160000 (submodule)
--- a/docs/submodules/apex
+++ b/docs/submodules/apex
@@ -1 +1 @@
-Subproject commit 85d68ef3be89293b9dd9525d05f6de0b06d9fab3
+Subproject commit 68bb8c986bfdca528a06e18e58507b4750fdf40e