container-push: add fluentd to the list of containers to upload to dockerhub
container-push: add fluentd to the list of containers to upload to dockerhub

Fluentd is missing on the static list.

Change-Id: I8f96876f806cf0177403ef79924421d0bc8a05f1

redhat-openstack/rdo-infra,redhat-openstack/rdo-infra,rdo-infra/ci-config,rdo-infra/ci-config,redhat-openstack/rdo-infra,rdo-infra/ci-config,redhat-openstack/rdo-infra,rdo-infra/ci-config