Update git submodules

Update git submodules

* Update docs/submodules/kvmfornfv from branch 'master'
  - Generating only kernel debian packages

    This patch includes scripts to generate only kernel debian packages
    based on the commit-id provided in the compass conf file and also
    used to remove code duplications.

    NOTE: For generating the kernel debian packages commit-id should be
    provided in compass.conf file and the default type should be changed
    to 'ubuntu' in build.sh script.

    Change-Id: I7f0822c565100a44e5289d6af825289e697130aa
    Signed-off-by: Gundarapu Kalyan Reddy <reddyx.gundarapu@intel.com>