Update git submodules

* Update docs/submodules/functest from branch 'stable/euphrates'
  - Fix fail of vRouter on Orange POD

    1. Functest docker container environment has no attribute 'OS_REGION_NAME'
    2. vRouter was get the 'OS_REGION_NAME' but not used it.
    3. Deleting use 'OS_REGION_NAME' part of vRouter.
    4. Utility lib of vRouter use Nova client.
    5. Modifying Nova client authentication step for auth api v3.
    6. Doing test of modified vRouter on Orange POD.

    Change-Id: I062549e5ca48fb4825b53448a4e2ffc8c1f8ec40
    Signed-off-by: root <shuya.nakama@okinawaopenlabs.org>
    (cherry picked from commit 3fa62219bb5a9e928fe94d95314c7c00d5f06e66)

diff --git a/docs/submodules/functest b/docs/submodules/functest
index a6ef634..eb104ac 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit a6ef634a1bc7ba1f877f421bfcb7532d9501c045
+Subproject commit eb104ac8d30cef77d80d92f5d7eccb3a9a916fa1