Update git submodules

* Update docs/submodules/daisy from branch 'master'
  - Merge "Add pytest file for prepare/execute.py"
  - Add pytest file for prepare/execute.py

    1.Add pytest file test_execute.py for prepare/execute.py.
    2.Change the makedirs mode from 0600 to 0700 for test env.

    Change-Id: Ie29e9e4b4210b170f448faf4df907e55bff1435f
    Signed-off-by: zhongjun <zhong.jun@zte.com.cn>

diff --git a/docs/submodules/daisy b/docs/submodules/daisy
index 068b996..ff4b08f 160000 (submodule)
--- a/docs/submodules/daisy
+++ b/docs/submodules/daisy
@@ -1 +1 @@
-Subproject commit 068b996a57768c59b971db00570c3f621e7c18ad
+Subproject commit ff4b08f10fec583f49aac62bcb8a3898926a05e7