Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Merge "Fix fail of vRouter on Orange POD"
  - 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>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index e2d98fa..66608fe 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit e2d98fa355a3346675b660c37108f59f28ad16e4
+Subproject commit 66608fe7feb3b6707f34fd2f578aee46aa327619