Update git submodules

Update git submodules

* Update docs/submodules/compass4nfv from branch 'master'
  - Enable neutron port trunk

    JIRA: COMPASS-571

    The network trunk service allows multiple networks to be connected to an
    instance using a single virtual NIC (vNIC). Multiple networks can be presented
    to an instance by connecting it to a single port. This is a highly relevant
    feature for VNFs and hence for OPNFV as a reference NFVI.

    This patch is about enabling the trunk port feature in Compass deployments.

    Change-Id: I270c3f1d5e4af99578c8e1882fae12ddddaabe78
    Signed-off-by: Yifei Xue <xueyifei@huawei.com>