PIM-2716 : enhance installer data fixtures

- [x] roles (+load acl roles) installer
- [x] groups installer
- [x] update user installer
- [x] remove roles, groups, users before insert custom ones
- [ ] use processors to import them ? TODO Later

| Q                    | A
| -------------------- | ---
| Bug fix?             | Y
| New feature?         | Y
| BC breaks?           | N
| CI currently passes? | Y
| Tests pass?          | Y
| Scenarios pass?      | Y
| Checkstyle issues?   | N
| Changelog updated?   | Y
| Fixed tickets        | PIM-2716
| Doc PR               |