Update git submodules

Update git submodules

* Update docs/submodules/releng from branch 'master'
  - KVMFORNFV: Disabling kvmfornfv daily danube job.

    This patch is used to temporarily disable kvmfornfv daily danube
    job from triggering as Intel-pod10 is currently not available for
    executing daily danube test cases.

    Note: Will enable the kvmfornfv daily danube job once Intel-pod10
    is available for executing test cases.

    Change-Id: I26cb1e360962a895b2e3ced3ccadfc1f770a5663
    Signed-off-by: Gundarapu Kalyan Reddy <reddyx.gundarapu@intel.com>