Update git submodules

* Update docs/submodules/daisy from branch 'stable/euphrates'
  - Merge "add functest guide doc" into stable/euphrates
  - add functest guide doc

    Change-Id: I615908c95526a982d901ea1186da573e2cc030d9
    Signed-off-by: zhouya <zhou.ya@zte.com.cn>
    (cherry picked from commit 724c7d57abe27f3820d9ea5a2c1eff6bacc4e105)

diff --git a/docs/submodules/daisy b/docs/submodules/daisy
index 2e4c5f1..e9b3657 160000 (submodule)
--- a/docs/submodules/daisy
+++ b/docs/submodules/daisy
@@ -1 +1 @@
-Subproject commit 2e4c5f1505701ce94a02b2060ea5b0e87c493e29
+Subproject commit e9b3657808ab47a9478fa5137abb27cbede11ad2