Update git submodules

* Update docs/submodules/qtip from branch 'master'
  - Merge "apex integration"
  - apex integration

    Change-Id: Ief21554dfa7cd79e7ed0cb1615f6dbf079cb6077
    Signed-off-by: zhihui wu <wu.zhihui1@zte.com.cn>

diff --git a/docs/submodules/qtip b/docs/submodules/qtip
index e734d17..b40f4ca 160000 (submodule)
--- a/docs/submodules/qtip
+++ b/docs/submodules/qtip
@@ -1 +1 @@
-Subproject commit e734d1720f447e41e8b7923618fbfaf4b2ec8138
+Subproject commit b40f4ca8366037551d17ce93f892caba464f9bc0