Update git submodules

* Update docs/submodules/functest from branch 'stable/euphrates'
  - Enhance the compatibility judgement of INSTALLER

    When the env INSTALLER_TYPE is None, while the var installer in
    dependencies is not None, the current test case should not be run.

    Change-Id: If1b67f16f39d5c44b2c3729819dd665faed41b73
    Signed-off-by: Linda Wang <wangwulin@huawei.com>
    (cherry picked from commit 801a53baa1229fd4a88bb1aad692b86f536d970d)

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 07d3e55..f73a272 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 07d3e55554b208a4d1626329ad5e1664c97f173c
+Subproject commit f73a27258427b33a261c3e103ec1da25ef5c026b