Update git submodules

* Update docs/submodules/qtip from branch 'stable/danube'
  - keep consistent with the ci script of branch master

    Change-Id: I5bf19ebc8b5161655029245d498a5fa46e5792e0
    Signed-off-by: zhihui wu <wu.zhihui1@zte.com.cn>

diff --git a/docs/submodules/qtip b/docs/submodules/qtip
index c868680..eacf674 160000 (submodule)
--- a/docs/submodules/qtip
+++ b/docs/submodules/qtip
@@ -1 +1 @@
-Subproject commit c868680eb17c2a7f86cb794e1cf15330f21dd3cd
+Subproject commit eacf67438b4b821e1360ce43d72f456bbc4fa127