PDF/A-1 parameter is ignored during conversion

1. in Studio set up an automated chain like the following:

   - Context.FetchDocument
   - Context.SetVar:
       name: TheDoc
       value: "@{Document.id}"
   - Document.GetBlob:
       xpath: "file:content"
   - Blob.RunConverter:
       converter: any2pdf
       parameters:
         PDF/A-1: "true"
   - WebUI.DownloadFile
   

2. create a user action that will trigger the chain
3. install Nuxeo 7.10 or later
4. create a Document of type File and attach an excel document (i.e. attached file)
5. click the user action and download the pdf file
6. the file is not formatted as expected (some part is cut on the right)

In JODBasedConverter.java:

    public BlobHolder convert(BlobHolder blobHolder, Map<String, Serializable> parameters) throws ConversionException {
        blobHolder = new UTF8CharsetConverter().convert(blobHolder, parameters);
        Blob inputBlob = blobHolder.getBlob();
        String blobPath = blobHolder.getFilePath();
        if (inputBlob == null) {
            return null;
        }

        OfficeDocumentConverter documentConverter = newDocumentConverter();
        // This plugin do deal only with one input source.
        String sourceMimetype = inputBlob.getMimeType();

        boolean pdfa1 = parameters != null && Boolean.TRUE.equals(parameters.get(PDFA1_PARAM));

Boolean.TRUE is of type Boolean
parameters.get(PDFA1_PARAM) returns a String

This means a comparison between both will always return false.
On can verify this by issuing the following statement in a debug session:

Boolean.TRUE.equals("true")

A fix would be the following:

boolean pdfa1 = parameters != null && Boolean.TRUE.toString().equals(parameters.get(PDFA1_PARAM))