Update git submodules

* Update docs/submodules/daisy from branch 'master'
  - Fix to upstream stable/pike branch

    To satisfy security check, DAISYCORE_REPO and DAISYCORE_TAG are
    deleted.

    Change-Id: Ib3cf4c50a417f28502c4e3115f47429065620ca1
    Signed-off-by: Zhijiang Hu <hu.zhijiang@zte.com.cn>

diff --git a/docs/submodules/daisy b/docs/submodules/daisy
index cfb7518..8b595f6 160000 (submodule)
--- a/docs/submodules/daisy
+++ b/docs/submodules/daisy
@@ -1 +1 @@
-Subproject commit cfb75182ab0ac2800d556197703847d0d37b2d15
+Subproject commit 8b595f64ed1b995890df62b99f95920a6406b116