Update git submodules

* Update docs/submodules/daisy from branch 'master'
  - Update kolla image

    Change-Id: I7c7b6b10c5acc72f0de70703824e2034494eae77
    Signed-off-by: Zhijiang Hu <hu.zhijiang@zte.com.cn>

diff --git a/docs/submodules/daisy b/docs/submodules/daisy
index 944dbc4..827fe34 160000 (submodule)
--- a/docs/submodules/daisy
+++ b/docs/submodules/daisy
@@ -1 +1 @@
-Subproject commit 944dbc42916fb8c8590aaa803dba1ee8422fdeb3
+Subproject commit 827fe34d81854ccc3a6598e95c548530e396ea50