Update git submodules

* Update docs/submodules/daisy from branch 'master'
  - Exit deploy when exception occurred

    Exception occurred in [1]. But te deployment didn't stop and
    blocked for a long time.

    [1] https://build.opnfv.org/ci/job/daisy-deploy-baremetal-daily-master/169/

    Change-Id: I0d5639da1e0d011855df0b0651328f11168e5d01
    Signed-off-by: Alex Yang <yangyang1@zte.com.cn>

diff --git a/docs/submodules/daisy b/docs/submodules/daisy
index af5ccd5..5923e6d 160000 (submodule)
--- a/docs/submodules/daisy
+++ b/docs/submodules/daisy
@@ -1 +1 @@
-Subproject commit af5ccd55863bd86f4ea6e71a161e2ffd5c964bdc
+Subproject commit 5923e6dd685a9efd9e87b1e2fe4bd538e6fb0ac6