Check to see if a queue exists.

    CLI Example:

    .. code-block:: bash

        salt myminion boto_sqs.exists myqueue region=us-east-1

def exists(name, region=None, key=None, keyid=None, profile=None):
    '''
    Check to see if a queue exists.

    CLI Example:

    .. code-block:: bash

        salt myminion boto_sqs.exists myqueue region=us-east-1
    '''
    conn = _get_conn(region=region, key=key, keyid=keyid, profile=profile)

    try:
        conn.get_queue_url(QueueName=name)
    except botocore.exceptions.ClientError as e:
        missing_code = 'AWS.SimpleQueueService.NonExistentQueue'
        if e.response.get('Error', {}).get('Code') == missing_code:
            return {'result': False}
        return {'error': __utils__['boto3.get_error'](e)}
    return {'result': True}