Description of problem:
The documentation says the CSV format is supported, but it is not possible imports it into business-central.
From docs: Red Hat JBOSS BRMS supports managing rules in a spreadsheet format. Supported formats are Excel (XLS) and CSV; accordingly, a variety of spreadsheet programs (such as Microsoft Excel) can be utilized.

(https://access.redhat.com/documentation/en-US/Red_Hat_JBoss_BRMS/6.0/html/Development_Guide/sect-Decision_Tables.html)

Version-Release number of selected component (if applicable):


How reproducible:
Create a decision table using the CSV format.

Steps to Reproduce:
1. Build an decision table
2. save as CSV
3. Upload into business-central or try to parse using the source code from branch master: https://github.com/droolsjbpm/drools/blob/6.1.x/drools-decisiontables/src/main/java/org/drools/decisiontable/parser/xls/ExcelParser.java

Actual results:
From business-central: The file type is not supported.
From the source code test:
Exception in thread "main" java.lang.IllegalArgumentException: Your InputStream was neither an OLE2 stream, nor an OOXML stream


Expected results:
From business-central: Successfully uploded.
Type successfully parsed.

Additional info: