Update git submodules

* Update docs/submodules/daisy from branch 'master'
  - Fix unittest

    openrc was changed in [1]

    [1] https://gerrit.opnfv.org/gerrit/#/c/59839/

    Change-Id: I30191475ce9a1b27a66d147519583d80b158547a
    Signed-off-by: Alex Yang <yangyang1@zte.com.cn>

diff --git a/docs/submodules/daisy b/docs/submodules/daisy
index 776d206..5012c27 160000 (submodule)
--- a/docs/submodules/daisy
+++ b/docs/submodules/daisy
@@ -1 +1 @@
-Subproject commit 776d2061bedda81278b421afde1b3d11cf48266e
+Subproject commit 5012c278224472d7964e3e8abd9392c06869ded4