@Override
    public HttpResponse handle(HttpRequest request) {
        try {
            if (request.getMethod() == com.yahoo.jdisc.http.HttpRequest.Method.POST) {
                return handlePOST(request);
            }
            return ErrorResponse.methodNotAllowed("Method '" + request.getMethod() + "' is not supported");
        } catch (RuntimeException e) {
            log.log(Level.WARNING, "Unexpected error handling '" + request.getUri() + "'", e);
            return ErrorResponse.internalServerError(Exceptions.toMessageString(e));
        }
    }
Attempts to validate the AWS Systems Manager Parameter Store settings to see if we can
run a working Vespa Cloud Secret Store with them.

@author ogronnesby
jdisc-cloud-aws/src/main/java/com/yahoo/jdisc/cloud/aws/AwsParameterStoreValidationHandler.java