Return the VM's location

def get_location(vm_):
    '''
    Return the VM's location
    '''
    locations = avail_locations()
    vm_location = six.text_type(config.get_cloud_config_value(
        'location', vm_, __opts__, search_global=False
    ))

    for location in locations:
        if vm_location in (locations[location]['name'],
                           locations[location]['slug']):
            return locations[location]['slug']
    raise SaltCloudNotFound(
        'The specified location, \'{0}\', could not be found.'.format(
            vm_location
        )
    )