Update git submodules

Update git submodules

* Update docs/submodules/compass4nfv from branch 'master'
  - Merge "Add moonv4 into Compass4nfv"
  - Add moonv4 into Compass4nfv

    JIRA:-

    To deploy moon master, export MOON_CFG env like below compass deploy:
    export MOON_CFG="master:flag=Disable,slave:flag=Enable,slave:name=slave1,slave:master_ip=master_ip"

    To deploy moon slave, export MOON_CFG env like below compass deploy:
    export MOON_CFG="master:flag=Enable,slave:flag=Disable,slave:name=slave1,slave:master_ip=master_ip"

    Change-Id: I21c0186a029c508d390c69112b43510d9c5b9c5c
    Signed-off-by: chigang <chigang@huawei.com>