Update git submodules

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>