Update git submodules

* Update docs/submodules/daisy from branch 'master'
  - enable opendaylight

    Change-Id: I759d864efa524c0d564b9d93aa480e155149adaa
    Signed-off-by: zhouya <zhou.ya@zte.com.cn>

diff --git a/docs/submodules/daisy b/docs/submodules/daisy
index 7795fc1..9b684b2 160000 (submodule)
--- a/docs/submodules/daisy
+++ b/docs/submodules/daisy
@@ -1 +1 @@
-Subproject commit 7795fc14f129a2c37607aa965d63e5831099681b
+Subproject commit 9b684b23b8377acbbf0cf7975375381831d84cf8