Update git submodules

Update git submodules

* Update docs/submodules/compass4nfv from branch 'master'
  - Merge "support Containerized compass-core"
  - support Containerized compass-core

    JIRA: COMPASS-534

    1. rm compass vm and add ansible to bring up 5 compass
       containers
    2. use tar package instead of compass.iso which contains
       compass docker images, OS ISO, PPA, pip packages.
    3. modify client.py to communicate with containerized
       compass-core
    4. modify cobbler files and ansible callback files
       to adapt with containerized compass-core
    5. upgrade openstack version to ocata
    6. use the openstack-ansible to deploy openstack
    7. virtual deploy external use nat

    Change-Id: Ifa2a3f5b8c7c32224ac4276fd3d4cc2b0d270a26
    Signed-off-by: huangxiangyu <huangxiangyu5@huawei.com>