roles: docker: Ensure service is started if docker is already installed
roles: docker: Ensure service is started if docker is already installed

If the 'docker' package is already installed, then the handlers will not
run and the service will not be (re-)started. As such, lets make sure
that the service is started even if the packages are already installed.

kubernetes-incubator/kubespray,kubernetes-incubator/kargo,kubernetes-sigs/kubespray,kubespray/kargo,kubernetes-sigs/kubespray,kubernetes-sigs/kubespray,kubespray/kargo,kubernetes-incubator/kubespray,kubernetes-incubator/kargo,Atoms/kubespray,insequent/kargo,insequent/kargo,Atoms/kubespray,Atoms/kubespray,kubernetes-sigs/kubespray,Atoms/kubespray