[WIP] PIM-2716 : enhance installer data fixtures

-[ ] roles installer
-[ ] groups installer
-[ ] update user installer
-[ ] remove roles, groups, users before insert custom ones
-[ ] use processors to import them ?

| Q                    | A
| -------------------- | ---
| Bug fix?             |
| New feature?         |
| BC breaks?           |
| CI currently passes? |
| Tests pass?          |
| Scenarios pass?      |
| Checkstyle issues?   |
| Changelog updated?   |
| Fixed tickets        |
| Doc PR               |