Update git submodules

* Update docs/submodules/daisy from branch 'master'
  - support ocata openstack, keep up with the upstream

    The upstream openstack/daisycloud-core supports ocata openstack now.
    https://review.openstack.org/#/c/465410/

    Change-Id: I14825c80cdd2297e5b0df3680f30fa5c32de3cc4
    Signed-off-by: Alex Yang <yangyang1@zte.com.cn>

diff --git a/docs/submodules/daisy b/docs/submodules/daisy
index bfacd10..9d221db 160000 (submodule)
--- a/docs/submodules/daisy
+++ b/docs/submodules/daisy
@@ -1 +1 @@
-Subproject commit bfacd100e576a50be19447f7c1b6cea2ac55ebd0
+Subproject commit 9d221db69bba6701eb8de06939fbda8d8ecca7af