Update git submodules

* Update docs/submodules/daisy from branch 'master'
  - add sdn_controller_ip to admin_openrc.sh

    Change-Id: I3af46368109bc5358fd0cc61a43f5be60479eab3
    Signed-off-by: root <zhou.ya@zte.com.cn>

diff --git a/docs/submodules/daisy b/docs/submodules/daisy
index 69a1af3..6ea756e 160000 (submodule)
--- a/docs/submodules/daisy
+++ b/docs/submodules/daisy
@@ -1 +1 @@
-Subproject commit 69a1af39f02bb5c6a471768648c15f8ae1e85776
+Subproject commit 6ea756e7cad324e70fd9546b15a268e910127d46