Update git submodules

* Update docs/submodules/qtip from branch 'master'
  - Merge "Use different folder for cached data"
  - Use different folder for cached data

    - `dump` is for raw testing data and logs from remote
    - `cache` for temporary data required for testing

    Change-Id: I540338eae2dd7bbd14b359e1a0dbce186ada902b
    Signed-off-by: Yujun Zhang <zhang.yujunz@zte.com.cn>

diff --git a/docs/submodules/qtip b/docs/submodules/qtip
index e1dbb6e..0e64642 160000 (submodule)
--- a/docs/submodules/qtip
+++ b/docs/submodules/qtip
@@ -1 +1 @@
-Subproject commit e1dbb6e7fb1830882f8ab376632bed521a6ad1bf
+Subproject commit 0e64642d1a62b4b0f319d2cfa0baa011b07c7520