Given a trail name describe its properties.

    Returns a dictionary of interesting properties.

    CLI Example:

    .. code-block:: bash

        salt myminion boto_cloudtrail.describe mytrail

def describe(Name,
             region=None, key=None, keyid=None, profile=None):
    '''
    Given a trail name describe its properties.

    Returns a dictionary of interesting properties.

    CLI Example:

    .. code-block:: bash

        salt myminion boto_cloudtrail.describe mytrail

    '''

    try:
        conn = _get_conn(region=region, key=key, keyid=keyid, profile=profile)
        trails = conn.describe_trails(trailNameList=[Name])
        if trails and trails.get('trailList'):
            keys = ('Name', 'S3BucketName', 'S3KeyPrefix',
                    'SnsTopicName', 'IncludeGlobalServiceEvents',
                    'IsMultiRegionTrail',
                    'HomeRegion', 'TrailARN',
                    'LogFileValidationEnabled', 'CloudWatchLogsLogGroupArn',
                    'CloudWatchLogsRoleArn', 'KmsKeyId')
            trail = trails['trailList'].pop()
            return {'trail': dict([(k, trail.get(k)) for k in keys])}
        else:
            return {'trail': None}
    except ClientError as e:
        err = __utils__['boto3.get_error'](e)
        if e.response.get('Error', {}).get('Code') == 'TrailNotFoundException':
            return {'trail': None}
        return {'error': __utils__['boto3.get_error'](e)}