Update git submodules

* Update docs/submodules/qtip from branch 'master'
  - Merge "Beautify table and figure output"
  - Beautify table and figure output

    - use qgrid for interactive grid
    - add legend to figures
    - enlarge figures

    Change-Id: I18cc58e1cbf64d4dda0593ebad55067fd6cdcfd3
    Signed-off-by: Yujun Zhang <zhang.yujunz@zte.com.cn>

diff --git a/docs/submodules/qtip b/docs/submodules/qtip
index 5e72fe0..a237547 160000 (submodule)
--- a/docs/submodules/qtip
+++ b/docs/submodules/qtip
@@ -1 +1 @@
-Subproject commit 5e72fe064674a69fed1d2d52d63207675b66832d
+Subproject commit a2375472de7d938c25c3eb16aebab807fceaf7b3