[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>
```

pass
def make_http_request(url, data=None, headers=None, method='GET'):
    if is_string(method):
        method = requests.__dict__[method.lower()]
    return method(url, headers=headers, data=data, auth=NetrcBypassAuth(), verify=False)
class SafeStringIO(io.StringIO):
    """ Safe StringIO implementation that doesn't fail if str is passed in Python 2. """
    def write(self, obj):
        if six.PY2 and isinstance(obj, str):
            obj = obj.decode('unicode-escape')
        return super(SafeStringIO, self).write(obj)
def clean_cache(file_pattern=CACHE_FILE_PATTERN,
        last_clean_time=last_cache_clean_time, max_age=CACHE_MAX_AGE):
    with MUTEX_CLEAN:
        time_now = now()
        if last_clean_time['time'] > time_now - CACHE_CLEAN_TIMEOUT:
            return
        for cache_file in set(glob.glob(file_pattern)):
            mod_time = os.path.getmtime(cache_file)
            if time_now > mod_time + max_age:
                rm_rf(cache_file)
        last_clean_time['time'] = time_now
    return time_now
def truncate(data, max_length=100):