Externalize PIM projects parameters

| Q                    | A
| -------------------- | ---
| Bug fix?             | N
| New feature?         | N
| BC breaks?           | N
| CI currently passes? | Y
| Tests pass?          | Y
| Scenarios pass?      | Running
| Checkstyle issues?*  | N
| PMD issues?**        | N
| Changelog updated?   | Y
| Fixed tickets        | -
| Doc PR               | To come
A nice header explaining what's the purpose of the file and how to override the content in the parameters.yml could be nice. A self documenting parameter file is better and easier than another documentation outside of it. ;)