caduceus panic

[ilawjr]

While reviewing caduceus production logs, there were several panics found:
{"caller":"caduceus2019/12/17 03:39","msg":":06 http: panic serving [snip]:12908: runtime error: invalid memory address or nil pointer dereference","ts":"2019-12-17T03:39:06.352314044Z"}
{"caller":"caduceus2020/01/01 15:17","msg":":07 http: panic serving [snip]:26498: runtime error: invalid memory address or nil pointer dereference","ts":"2020-01-01T15:17:07.613197663Z"}

[joe94]

This depends on wrp message obj being validated.

[joe94]

We expect to see these errors until xmidt-org/wrp-go#25 is fixed and ported into caduceus.