EPIC - Enforce reproducible build on Maven artifacts

[gitgabrio]

Enforce reproducible build during PR

1. create reproducible-build profile to be activated by reproducible flag (-Dreproducible) inside poms
2. adapt pr yaml to enable it

• [x] https://github.com/apache/incubator-kie-issues/issues/1347
• [x] https://github.com/apache/incubator-kie-issues/issues/1348
• [x] https://github.com/apache/incubator-kie-issues/issues/1349
• [x] https://github.com/apache/incubator-kie-issues/issues/1352

@mariofusco @porcelli @baldimir @yesamer @pefernan