How to use the jumbo.core.vagrant.cmd function in jumbo

def start(cluster_name, cluster):
    """Launches the VMs (vagrant up)
    """

    cluster = cluster_name if cluster_name else cluster

    if not cluster:
        cluster = ss.svars['cluster']

    try:
        vagrant.cmd(['vagrant', 'up', '--color'], cluster=cluster)
    except (ex.LoadError, ex.CreationError) as e:
        print_with_color(e.message, 'red')

def status(cluster_name, cluster):
    cluster = cluster_name if cluster_name else cluster

    if not cluster:
        cluster = ss.svars['cluster']

    try:
        vagrant.cmd(['vagrant', 'status', '--color'], cluster=cluster)
    except (ex.LoadError, ex.CreationError) as e:
        print_with_color(e.message, 'red')

def stop(cluster_name, cluster):
    cluster = cluster_name if cluster_name else cluster

    if not cluster:
        cluster = ss.svars['cluster']

    try:
        vagrant.cmd(['vagrant', 'halt', '--color'], cluster=cluster)
    except (ex.LoadError, ex.CreationError) as e:
        print_with_color(e.message, 'red')

def restart(cluster_name, cluster):
    cluster = cluster_name if cluster_name else cluster

    if not cluster:
        cluster = ss.svars['cluster']

    try:
        vagrant.cmd(['vagrant', 'halt', '--color'], cluster=cluster)
        vagrant.cmd(['vagrant', 'up', '--color'], cluster=cluster)
    except (ex.LoadError, ex.CreationError) as e:
        print_with_color(e.message, 'red')

def provision(cluster_name, cluster):
    cluster = cluster_name if cluster_name else cluster

    if not cluster:
        cluster = ss.svars['cluster']

    try:
        vagrant.cmd(['vagrant', 'up', '--provision', '--color'],
                    cluster=cluster)
    except (ex.LoadError, ex.CreationError) as e:
        print_with_color(e.message, 'red')