[X] bug report
[ ] feature request

# Detailed description

The AWS API supports Authorization parameters as GET parameters, e.g. here's a GET request to SendMessage on SQS:

```
curl 'http://localhost:4566/000000000000/SomeQueue.fifo?Action=SendMessage&MessageGroupId=Default&MessageDeduplicationId=1615597859837&MessageBody=%7B%22gateway_id%22%3A%20%2204e73c80-3539-499c-92a4-a0b106c2f6ab%22%7D&X-Amz-Algorithm=AWS4-HMAC-SHA256&X-Amz-Credential=test%2F20210313%2Fus-east-1%2Fsqs%2Faws4_request&X-Amz-Date=20210313T011059Z&X-Amz-Expires=86400000&X-Amz-SignedHeaders=host&X-Amz-Signature=2c652c7bc9a3b75579db3d987d1e6dd056f0ac776c1e1d4ec91e2ce84e5ad3ae'
```

## Expected behavior

Should send the message and return receipt information.

## Actual behavior

Returns...

```
<?xml version="1.0" encoding="UTF-8"?>
<Error>
    <Code>NoSuchBucket</Code>
    <Message>The specified bucket does not exist</Message>
    <BucketName>000000000000</BucketName>
    <RequestID>7a62c49f-347e-4fc4-9331-6e8eEXAMPLE</RequestID>
</Error>
```

from io import BytesIO
from datetime import datetime, date
from contextlib import closing
from six import with_metaclass
from six.moves import cStringIO as StringIO
from six.moves.queue import Queue
from six.moves.urllib.parse import urlparse, parse_qs
from multiprocessing.dummy import Pool
from localstack import config
from localstack.utils import bootstrap
from localstack.config import DEFAULT_ENCODING
from localstack.constants import ENV_DEV
from localstack.utils.bootstrap import FuncThread
TMP_FILES = []
TMP_THREADS = []
TMP_PROCESSES = []
CACHE_CLEAN_TIMEOUT = 60 * 5
CACHE_MAX_AGE = 60 * 60
CACHE_FILE_PATTERN = os.path.join(tempfile.gettempdir(), '_random_dir_', 'cache.*.json')
last_cache_clean_time = {'time': 0}
MUTEX_CLEAN = threading.Semaphore(1)
TIMESTAMP_FORMAT = '%Y-%m-%dT%H:%M:%S'
TIMESTAMP_FORMAT_MICROS = '%Y-%m-%dT%H:%M:%S.%fZ'
CODEC_HANDLER_UNDERSCORE = 'underscore'
DOWNLOAD_CHUNK_SIZE = 1024 * 1024
LOG = logging.getLogger(__name__)
INFRA_STOPPED = False
CACHE = {}
SSL_CERT_LOCK = threading.RLock()
class Mock(object):