commit fd593ee1d3cb19d73c49f94c0f9b4a78856d6198
author Antonio Barone <syntonyze@gmail.com> Wed Jun 02 14:31:34 2021 +0300
committer Antonio Barone <syntonyze@gmail.com> Thu Jun 03 19:09:12 2021 +0300
tree b0f70311f889bc2c1e1fb49026ebe0a16eb4bf43
parent 321e37e448336c2ae7495808da5fa483e755141b

Register ProjectDeletion events for gson serialization

ProjectDeletion events were not registered event types.

This caused failures when EventGson tried to serialize/deserialize
objects having those events as field, Throwing the JsonParseException:

```
Unknown event type: project-deletion-replication-scheduled
```

Register ProjectDeletion event types, similarly to what already done for
Ref replication events (RefReplicatedEvent, RefReplicationDoneEvent,
RefReplicationScheduledEvent).

Bug: Issue 14628
Change-Id: I7471e9a0f8ea8ec27d5800f785d1c7006b35055c