Use consistent field naming convention protobuf definitions
Use consistent field naming convention protobuf definitions

Consistently use lowercase with underscores for field names.
Does not affect generated Java classes.

Netflix/genie,Netflix/genie,tgianos/genie,Netflix/genie,Netflix/genie,tgianos/genie,Netflix/genie,tgianos/genie,tgianos/genie,tgianos/genie