<!-- Love localstack? Please consider supporting our collective:
👉  https://opencollective.com/localstack/donate -->

# 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


"""
    Recursively removes a file or directory
    """
    if not path or not os.path.exists(path):
        return
    
    if is_alpine():
        try:
            return run('rm -rf "%s"' % path)
        except Exception:
            pass
    
    chmod_r(path, 0o777)
    
    exists_but_non_dir = os.path.exists(path) and not os.path.isdir(path)
    if os.path.isfile(path) or exists_but_non_dir:
        os.remove(path)
    else:
        shutil.rmtree(path)
def cp_r(src, dst):
    """Recursively copies file/directory"""
    if os.path.isfile(src):
        shutil.copy(src, dst)
    else:
        shutil.copytree(src, dst)
def download(url, path, verify_ssl=True):
    """Downloads file at url to the given path"""
    
    
    s = requests.Session()