Update git submodules

* Update docs/submodules/qtip from branch 'stable/danube'
  - Update release note for Danube 3.0

    Change-Id: I7474ad539fd3066010f804747bad2819deb5564b
    Signed-off-by: Yujun Zhang <zhang.yujunz@zte.com.cn>

diff --git a/docs/submodules/qtip b/docs/submodules/qtip
index eacf674..79f16fd 160000 (submodule)
--- a/docs/submodules/qtip
+++ b/docs/submodules/qtip
@@ -1 +1 @@
-Subproject commit eacf67438b4b821e1360ce43d72f456bbc4fa127
+Subproject commit 79f16fd2a2cd2ae6e93e0f18aa87f5c1a24354f2