Apply patch from Hari Nair (CommScope)

[morazow]

It adds additional user parameters when using udf to import from Kafka clusters. Additionally, improves the Kafka consumer application code.

Thanks Hari for your feedback and contributions!

Fixes #41.

[codecov]

Codecov Report

Merging #43 into develop will decrease coverage by 2.48%.
The diff coverage is 0%.

@@             Coverage Diff             @@
##           develop      #43      +/-   ##
===========================================
- Coverage    79.61%   77.13%   -2.49%     
===========================================
  Files           30       30              
  Lines          682      704      +22     
  Branches        71       74       +3     
===========================================
  Hits           543      543              
- Misses         139      161      +22

Impacted Files	Coverage Δ
.../exasol/cloudetl/scriptclasses/KafkaMetadata.scala	0% <0%> (ø)	⬆️
...om/exasol/cloudetl/scriptclasses/KafkaImport.scala	0% <0%> (ø)	⬆️
...xasol/cloudetl/kafka/KafkaConsumerProperties.scala	0% <0%> (ø)	⬆️
...main/scala/com/exasol/cloudetl/bucket/Bucket.scala	96.96% <0%> (-3.04%)	⬇️

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