Added RequestId to cumulus format log messages

[bbuechler]

seems obvious in retrospect, but would be useful for capturing the final result.

Alternative solution:

1. detect a dict object being passed into a call logger call...
2. add each element of the dict to the log JSON...
3. have {"message": "<VALUE>"} be something to the affect of "cumulus log response payload"

thin-egress-app/lambda/app.py

Line 140 in 4111b52

def cumulus_log_message(outcome: str, code: int, http_method:str, k_v: dict):

[bbuechler]

Released in https://github.com/asfadmin/thin-egress-app/releases/tag/tea-build.105