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# Type of request: This is a ...

[ ] bug report
[X ] feature request

# Detailed description

I'm using localstack to create a dynamoDb table locally with a dynamodb stream and a flink application consuming data from the stream
The shardId created in localstack follows this format

shardId-000000000000-798cedd84a2953c5af70a131f8701f35

Flink expects this format
shardId-00000001592367572726-07776efd

The difference is just after the prefix shardId.
Normally the real shardId created by amazon use is composed by shardId prefix, 20-digit timestamp and 0-36 or more characters separated by '-'

The current shardId format is not valid for flink applications and it's not following the real pattern used by amazon

## Expected behavior

ShardId must follow the pattern
shardId prefix, 20-digit timestamp and 0-36 or more characters separated by '-'

## Actual behavior

The shardId follows the pattern
shardId prefix, 12 0s and 33 characters separated by '-'

# Steps to reproduce

Create a dynamodb table

## Command used to start LocalStack

I'm using docker and docker compose to run localstack


## Client code (AWS SDK code snippet, or sequence of "awslocal" commands)

aws --endpoint-url=http://localhost:4566 dynamodb create-table \
    --table-name temp4 \
    --attribute-definitions AttributeName=partition_key,AttributeType=S AttributeName=sort_key,AttributeType=S \
    --key-schema AttributeName=partition_key,KeyType=HASH AttributeName=sort_key,KeyType=RANGE \
    --provisioned-throughput ReadCapacityUnits=100,WriteCapacityUnits=100 \
    --stream-specification StreamEnabled=true,StreamViewType=NEW_AND_OLD_IMAGES


aws_stack.create_dynamodb_table(TEST_DDB_TABLE_NAME_2, partition_key=PARTITION_KEY)
        table = self.dynamodb.Table(TEST_DDB_TABLE_NAME_2)
        # Cr
        num_items = 20
        for i in range(0, num_items):
            item = {PARTITION_KEY: 'id%s' % i, 'data1': 'foobar123 ' * 1000}
            table.put_item(Item=item)
        # Re
        result = table.scan(TableName=TEST_DDB_TABLE_NAME_2)
        self.assertEqual(len(result['Items']), num_items)
        # cl
        delete_table(TEST_DDB_TABLE_NAME_2)
    def test_time_to_live(self):
        aws_stack.create_dynamodb_table(TEST_DDB_TABLE_NAME_3, partition_key=PARTITION_KEY)
        table = self.dynamodb.Table(TEST_DDB_TABLE_NAME_3)
        # In
        items = {
            'id1': {PARTITION_KEY: 'id1', 'data': 'IT IS'},
            'id2': {PARTITION_KEY: 'id2', 'data': 'TIME'},
            'id3': {PARTITION_KEY: 'id3', 'data': 'TO LIVE!'}
        }
        for k, item in items.items():
            table.put_item(Item=item)
        # De