Update git submodules

Update git submodules

* Update docs/submodules/daisy from branch 'master'
  - Merge "Solve double container removal problem"
  - Solve double container removal problem

    From [1], We got an error from docker: "No such container: daisy"
    while issuing "docker rm -v -f daisy", this OK because we do
    docker run --rm before this. So it is safe to add "|| true" after
    "docker rm -v -f daisy".

    [1] https://build.opnfv.org/ci/job/daisy-build-daily-master/500/console

    Change-Id: I3d17595156f1b6181a84d9a03e2cd6ddff275eb3
    Signed-off-by: Zhijiang Hu <hu.zhijiang@zte.com.cn>