Some licenses that look pemissive are not included in `Permissive Licenses` group

### Current Behavior

- `BSD 2-Clause "Simplified" License` is included in the `Permissive Licenses` group but `BSD 2-Clause with views sentence` is not included
- `Python-2.0` also looks permissive https://spdx.org/licenses/Python-2.0.html
- `BlueOak-1.0.0` is public-domain like https://spdx.org/licenses/BlueOak-1.0.0.html
### Proposed Behavior

Why not add them to the group?

### Checklist

- [x] I have read and understand the [contributing guidelines](https://github.com/DependencyTrack/dependency-track/blob/master/CONTRIBUTING.md#filing-issues)
- [x] I have checked the [existing issues](https://github.com/DependencyTrack/dependency-track/issues) for whether this enhancement was already requested