Update git submodules

* Update docs/submodules/daisy from branch 'master'
  - unify the way of getting openstack clients

    Change-Id: If3a1d1a8b74e11c5861c016bd722b78f4cf9b475
    Signed-off-by: SerenaFeng <feng.xiaowei@zte.com.cn>

diff --git a/docs/submodules/daisy b/docs/submodules/daisy
index bbef0fa..9b44406 160000 (submodule)
--- a/docs/submodules/daisy
+++ b/docs/submodules/daisy
@@ -1 +1 @@
-Subproject commit bbef0fa1fb89a90a98e66ece5b19852bcf3f2332
+Subproject commit 9b44406394c56b4d162e3feae6282777a63b5ec0