Support list of names in the parser to match profiles by name

In the same way SortingHat supports a list of emails when parsing an identities file using GrimoireLab format, SH should also support this file including a list of names or aliases. Having this list would allow to match profiles using different names. After including this change, the YAML file could contain an entry like this one:

```
- profile:
name: Tom Marvolo Riddle
alias:
- Tom M. Riddle
- Tom Riddle
enrollments:
- organization: Dark Arts, Inc.
email:
- tom.riddle@dark.org
- tommriddle@users.noreply.github.com
```