* adding kafka consumer config options (--kafka-max-poll-interval, --kafka-session-timeout, --kafka-group-instance-id, --kafka-socket-keepalive-enable, and --consumer-close-timeout)
* wrapping consumer.Close() in timeout. Will wait consumer-close-timeout seconds before forcing consumer to exit
* clean up logs
(cherry picked from commit 17cdc58d80)
* removes unused filesize function
* removes ioutil usage
* updates ioutil.ReadAll to io.ReadAll
* updates ioutil.TempFile to os.CreateTemp
* updates ioutil.TempDir to os.MkdirTemp
* updates ioutil.ReadAll to os.ReadAll
* update ioutil.WriteFile to os.WriteFile
* updates ioutil.Discard to io.Discard
* updates ioutil.ReadDir to os.ReadDir where applicable
* removes unused code in idk
* creates type to use for context value keys
* replaces assert.Nil with assert.NoError for error checks
