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>