Update git submodules

Update git submodules

* Update docs/submodules/kvmfornfv from branch 'master'
  - Removing phy2phy_tput_mod_vlan test case execution from daily job

    This patch is used to remove phy2phy_tput_mod_vlan packet forwarding
    test case execution from kvmfornfv daily job as this test case has no
    guest involved.

    Kvmfornfv will execute only test cases that involves atleast one or more
    guests.

    Note: phy2phy_tput test case is an exception and will be used in future
    for comparing results and debugging if needed.

    Change-Id: I698361a82db7102d23146f8ffb1f1d1ef05b0621
    Signed-off-by: Gundarapu Kalyan Reddy <reddyx.gundarapu@intel.com>