Update git submodules

* Update docs/submodules/kvmfornfv from branch 'master'
  - Merge "Optimizing the code and uploading ftrace logs to artifacts"
  - Optimizing the code and uploading ftrace logs to artifacts

    This patch is used to exclude execution of disable_trace.sh as
    ftrace will be disabled during post-execution of cyclictest
    through yardstick. Also includes uploading verify logs to
    artifacts when ftrace is enabled for debugging.

    Change-Id: I4674f2b9c03274eb2a96b3258a718c9f46419022
    Signed-off-by: Gundarapu Kalyan Reddy <reddyx.gundarapu@intel.com>

diff --git a/docs/submodules/kvmfornfv b/docs/submodules/kvmfornfv
index f894c01..c4d68bc 160000 (submodule)
--- a/docs/submodules/kvmfornfv
+++ b/docs/submodules/kvmfornfv
@@ -1 +1 @@
-Subproject commit f894c01f90dd0d1813e8f32217cc0309ee5db219
+Subproject commit c4d68bc45aa6aa8b7fe39bce206cb17c2cb2d365