Update git submodules

* Update docs/submodules/kvmfornfv from branch 'master'
  - Merge "To update the yardstick stable branch."
  - To update the yardstick stable branch.

    This patch is used to update the yardstick stable branch from
    colorado to danube for executing cyclictest as a part of kvmfornfv
    verify and daily jobs.

    Change-Id: I9deb72e1d729bb9189db56b9e6aeec4fbe85a4d7
    Signed-off-by: Gundarapu Kalyan Reddy <reddyx.gundarapu@intel.com>

diff --git a/docs/submodules/kvmfornfv b/docs/submodules/kvmfornfv
index c9f6c8e..5e109e8 160000 (submodule)
--- a/docs/submodules/kvmfornfv
+++ b/docs/submodules/kvmfornfv
@@ -1 +1 @@
-Subproject commit c9f6c8ee5a42e7cf4af990a65e4b30d6363e1436
+Subproject commit 5e109e88c59fe548ba73b3c01bdabb2250ada5f7