Update git submodules

* Update docs/submodules/nfvbench from branch 'master'
  - Fix function name in test code

    Change-Id: Id315153744f6458c8af0abd5c7a180178f901d97
    Signed-off-by: ahothan <ahothan@cisco.com>

diff --git a/docs/submodules/nfvbench b/docs/submodules/nfvbench
index 16c704c..211bc02 160000 (submodule)
--- a/docs/submodules/nfvbench
+++ b/docs/submodules/nfvbench
@@ -1 +1 @@
-Subproject commit 16c704c392ccb63d7c976fdea9b3377c51e79de3
+Subproject commit 211bc02b88a19153eb33f9a4f6670638bf469676