Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Merge "Inject all envs in openrc into CONST"
  - Inject all envs in openrc into CONST

    After "env_prepare" is removed, some specific vars in openrc
    (eg,."EXTERNAL_NETWORK") loaded to os.environ should be injected
    into CONST in one python process.

    Change-Id: Iaa5c6047033dc2a30c533174e2016111759aec31
    Signed-off-by: Linda Wang <wangwulin@huawei.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 62d12c8..0d71ebc 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 62d12c838b7c008462b7c45731290c385ed98bff
+Subproject commit 0d71ebc2ddc07f92d1ca1901c3fec53ff1a3af84