Get the cache path for the container in question

    Cache paths are generate by combining the account name, container name,
    and saltenv, separated by underscores

def _get_container_path(container):
    '''
    Get the cache path for the container in question

    Cache paths are generate by combining the account name, container name,
    and saltenv, separated by underscores
    '''
    root = os.path.join(__opts__['cachedir'], 'azurefs')
    container_dir = '{0}_{1}_{2}'.format(container.get('account_name', ''),
                                         container.get('container_name', ''),
                                         container.get('saltenv', 'base'))
    return os.path.join(root, container_dir)