Update git submodules

* Update docs/submodules/daisy from branch 'master'
  - Merge "Add the pytest file test_environment.py"
  - Add the pytest file test_environment.py

    1.Add the pytest file test_enviroment.py
    2.Add the pytest file test_daisy_server.py

    Change-Id: If679c3a7279a915d078dd3008bcfc56be6dccc3e
    Signed-off-by: zhongjun <zhong.jun@zte.com.cn>

diff --git a/docs/submodules/daisy b/docs/submodules/daisy
index e82e05c..64bb1f6 160000 (submodule)
--- a/docs/submodules/daisy
+++ b/docs/submodules/daisy
@@ -1 +1 @@
-Subproject commit e82e05c743ba40de5b6a76ec9545a0ff6a19f414
+Subproject commit 64bb1f695fd692dd9e34c4083468c6c053838503