Update git submodules

* Update docs/submodules/daisy from branch 'master'
  - Merge "delete the HEARTBEAT plane in all_in_one network"
  - delete the HEARTBEAT plane in all_in_one network

    There is only one node in all-in-one env,so do not need to
    configure the HEARTBEAT plane, without this ps,we may get the
    globals.yml file an extra wrong value of
    keepalived_interface: '{{ network_interface }}' which is unnecessary
    for all-in-one env, and will result in keepalive not work, VIP lose,
    and since we still use VIP in all-in-one env, the whole deployment may fail.

    Change-Id: Ic1efabb533fd63e95254ad19ccf98adb5da6ae78
    Signed-off-by: zhouya <zhou.ya@zte.com.cn>

diff --git a/docs/submodules/daisy b/docs/submodules/daisy
index 4776b2a..1679159 160000 (submodule)
--- a/docs/submodules/daisy
+++ b/docs/submodules/daisy
@@ -1 +1 @@
-Subproject commit 4776b2a8a669ccf686e00aa5863b6b427e0381c9
+Subproject commit 167915919edd07650f36ee47528138277752b7a0