Update git submodules

* Update docs/submodules/qtip from branch 'master'
  - Fix bug in aggregation

    Change-Id: Ic6613a9ab585894984e1cdab6ead3a84d1c4af9c
    Signed-off-by: Yujun Zhang <zhang.yujunz@zte.com.cn>

diff --git a/docs/submodules/qtip b/docs/submodules/qtip
index 116b510..76cb6b0 160000 (submodule)
--- a/docs/submodules/qtip
+++ b/docs/submodules/qtip
@@ -1 +1 @@
-Subproject commit 116b5101e8f917b23b49ad91f0a65fada76e8c5e
+Subproject commit 76cb6b08ce04492bd02bec43487a82f99a0a2c5f