Update git submodules

* Update docs/submodules/daisy from branch 'master'
  - Export kolla preparation log when install failed

    Change-Id: I08844b899de2dba539b3c3942345f83d1ac3c198
    Signed-off-by: Alex Yang <yangyang1@zte.com.cn>

diff --git a/docs/submodules/daisy b/docs/submodules/daisy
index e572b77..4ccf287 160000 (submodule)
--- a/docs/submodules/daisy
+++ b/docs/submodules/daisy
@@ -1 +1 @@
-Subproject commit e572b7728e5c6becfe5c38fb9ca26302898b6109
+Subproject commit 4ccf28754c8581d093d31ef582af5ce1d18c6234