Turns on the quota system

    CLI Example:

    .. code-block:: bash

        salt '*' quota.on

def on(device):
    '''
    Turns on the quota system

    CLI Example:

    .. code-block:: bash

        salt '*' quota.on
    '''
    cmd = 'quotaon {0}'.format(device)
    __salt__['cmd.run'](cmd, python_shell=False)
    return True