Update git submodules

* Update docs/submodules/daisy from branch 'master'
  - Break dead loop in discover_host()

    Change-Id: I5e0186db88c9db16a8212b1c52e03fb9d6cf6adc
    Signed-off-by: Alex Yang <yangyang1@zte.com.cn>

diff --git a/docs/submodules/daisy b/docs/submodules/daisy
index 15772db..129ddb3 160000 (submodule)
--- a/docs/submodules/daisy
+++ b/docs/submodules/daisy
@@ -1 +1 @@
-Subproject commit 15772db47091b35d612f5d50bcf4584330b966ac
+Subproject commit 129ddb31dd0ed7fbff2dba4547287cd0a4370531