Update git submodules

* Update docs/submodules/daisy from branch 'master'
  - Merge "enlarge the ram of all_in_one node"
  - enlarge the ram of all_in_one node

    No the memory is not enough to creates vms in openstack to finish
    functest cases.

    Change-Id: I836ba43e8cd8a26a0dec3f5831cabcb9ae04e5da
    Signed-off-by: Alex Yang <yangyang1@zte.com.cn>

diff --git a/docs/submodules/daisy b/docs/submodules/daisy
index e878867..4d6bf1b 160000 (submodule)
--- a/docs/submodules/daisy
+++ b/docs/submodules/daisy
@@ -1 +1 @@
-Subproject commit e878867423fc89155b5212d885a646c9d8059d05
+Subproject commit 4d6bf1b0fc01c36b0ec9fe77cdfad608ca949ead