Update git submodules

Update git submodules

* Update docs/submodules/compass4nfv from branch 'master'
  - Merge "Compass4nfv Committer promotion for Yifei Xue and Xinhui Hu"
  - Compass4nfv Committer promotion for Yifei Xue and Xinhui Hu

    Xinhui votes
    https://lists.opnfv.org/pipermail/opnfv-tsc/2017-October/003904.html
    https://lists.opnfv.org/pipermail/opnfv-tsc/2017-October/003905.html
    https://lists.opnfv.org/pipermail/opnfv-tsc/2017-October/003899.html
    Yifei Votes
    https://lists.opnfv.org/pipermail/opnfv-tsc/2017-October/003906.html
    https://lists.opnfv.org/pipermail/opnfv-tech-discuss/2017-October/018613.html
    https://lists.opnfv.org/pipermail/opnfv-tsc/2017-October/003898.html

    Change-Id: I5b825af0a3f8b00da9ce4cc7f4adcd667341a2c6
    Signed-off-by: chigang <chigang@huawei.com>