route kafka logs thru logger

[maskarb]

Currently, rdkafka prints directly to stdout instead of using our log handler. This PR re-routes kafka log messages through our handler which will enable Kibana to pick up these logs.

Below shows a comparison of the output for the same log message:
Previous behavior:

koku_listener     | %4|1616432526.766|MAXPOLL|rdkafka#consumer-1| [thrd:main]: Application maximum poll interval (100000ms) exceeded by 215ms (adjust max.poll.interval.ms for long-running message processing): leaving group

New behavior:

koku_listener     | [2021-03-22 16:56:34,811] WARNING None MAXPOLL [rdkafka#consumer-1] [thrd:main]: Application maximum poll interval (100000ms) exceeded by 161ms (adjust max.poll.interval.ms for long-running message processing): leaving group

[codecov]

Codecov Report

Merging #2744 (e0ee8b9) into master (7246f95) will not change coverage.
The diff coverage is n/a.

@@          Coverage Diff           @@
##           master   #2744   +/-   ##
======================================
  Coverage    94.7%   94.7%           
======================================
  Files         289     289           
  Lines       22364   22364           
  Branches     2550    2550           
======================================
  Hits        21178   21178           
- Misses        714     716    +2     
+ Partials      472     470    -2