[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>
```

if not os.path.exists(folder):
        try:
            os.makedirs(folder)
        except OSError as err:
            
            if err.errno != 17:
                raise
def ensure_readable(file_path, default_perms=None):
    if default_perms is None:
        default_perms = 0o644
    try:
        with open(file_path, 'rb'):
            pass
    except Exception:
        LOG.info('Updating permissions as file is currently not readable: %s' % file_path)
        os.chmod(file_path, default_perms)
def chown_r(path, user):
    """ Recursive chown """
    
    import pwd
    import grp
    uid = pwd.getpwnam(user).pw_uid
    gid = grp.getgrnam(user).gr_gid
    os.chown(path, uid, gid)
    for root, dirs, files in os.walk(path):
        for dirname in dirs:
            os.chown(os.path.join(root, dirname), uid, gid)
        for filename in files:
            os.chown(os.path.join(root, filename), uid, gid)
def chmod_r(path, mode):