Update git submodules

* Update docs/submodules/functest from branch 'stable/danube'
  - Changing project name of vRouter

    JIRA: FUNCTEST-769

     When pushing result to DB in vRouter module an error occurred.
     couse is wrong project name.
     We changed project name from "vRouter" to "functest".

    Change-Id: I8b8289b48330b17b6d6620524024dea4f488e38a
    Signed-off-by: Shuya Nakama <shuya.nakama@okinawaopenlabs.org>
    (cherry picked from commit 9439d684449825f8d580c26b1b9475ccbdde698a)

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 3e3d3ed..bc790c5 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 3e3d3ed62d87eb5ff8bc4860c328f218b0f67315
+Subproject commit bc790c518181755239e518068db719e340ff8e07