Update git submodules

* Update docs/submodules/nfvbench from branch 'stable/euphrates'
  - Move container build to use tag 1.1.1

    Change-Id: I1cb453b735ecd8be7c7dc132304935c3d7b3897b
    Signed-off-by: ahothan <ahothan@cisco.com>
    (cherry picked from commit 58a0c0a0ba84c730678d648333824c84876f7fe1)

diff --git a/docs/submodules/nfvbench b/docs/submodules/nfvbench
index af94232..9e08011 160000 (submodule)
--- a/docs/submodules/nfvbench
+++ b/docs/submodules/nfvbench
@@ -1 +1 @@
-Subproject commit af94232f93ae53e9dae1db53527143a59094db45
+Subproject commit 9e080113aaf787b186ef2dd9017752b022ac0040