ignore unimportant events

[connorsmith256]

Feature or Problem

The lattice observer prints warning messages any time it receives an unexpected event. We've added a few events the host can emit, so I've added cases to the lattice observer so it won't emit warnings on expected events anymore

Release Information

v0.4.2

Consumer Impact

N/A

Testing

Manual Verification

• Started an application which uses the lattice observer
• Ran wash up on version 0.18, which starts v0.63.1 of the host
• Started an actor and provider, and waited 30s for the health check event
• Confirmed no warnings were printed by the lattice observer

[connorsmith256]

@autodidaddict I didn't think of using when! That's a much better way. I'm going to merge as-is to remove the warnings but will file a follow-on issue to refactor this