Clean up representations

[xgp]

• Use the lombok @Data and @Builder annotations to clean up the representations.
• Make sure we are using snake_case in naming.
  • Add methods for backwards compatibility if changed
  • Update docs/openapi.yaml if changed

[MGLL]

Does snake_case reference is for @JsonProperty("") annotations?

For example:

  @JsonProperty("domain_name")
  @NotNull
  public String getDomainName() {
    return domainName;
  }

[xgp]

Yes. This ticket is a cleanup issue.

1. We shouldn't be hand coding these.
2. We should make sure we update all objects received / returned by the API use snake_case (but also doesn't break backwards compatibility. This has been inconsistent, and it is frustrating to those hand-coding clients and not using the API libs or openapi.yaml

Not really a rush, but we'll probably get to it this quarter.