Update git submodules

Update git submodules

* Update docs/submodules/integration.git from branch 'master'
  to 3664e04b04ade624c1b2ee5bd2876939aed812cc
  - k8s: Allow Dublin cluster creation using RKE

    This patch adds sample cluster.yml which is based on Dublin cluster
    configuration file [1]. Main difference is in avoiding repetition by
    using anchors and alias nodes.

    Actual cluster creation provisioner is disabled by default because
    'control' and 'worker' nodes might not be ready yet.

    [1] https://docs.onap.org/en/dublin/_downloads/27934fe702048777f312d77dc30cd05a/cluster.yml

    Issue-ID: SECCOM-235
    Change-Id: Ibba0e754ba87e334cdaa61de83e48107f91083d9
    Signed-off-by: Pawel Wieczorek <p.wieczorek2@samsung.com>