Update git submodules

* Update docs/submodules/daisy from branch 'stable/euphrates'
  - Merge "Fix defaultbranch in .gitreview" into stable/euphrates
  - Fix defaultbranch in .gitreview

    Change-Id: I5505cd155f165e653b8bac09f3a5d61013b9c60b
    Signed-off-by: Alex Yang <yangyang1@zte.com.cn>

diff --git a/docs/submodules/daisy b/docs/submodules/daisy
index 998e5de..ef7ce0b 160000 (submodule)
--- a/docs/submodules/daisy
+++ b/docs/submodules/daisy
@@ -1 +1 @@
-Subproject commit 998e5debd55b52e1fa47f26f82d21d9e67a153e5
+Subproject commit ef7ce0b8c457cf9831d9556572ab13d7d4c660f6