SIENTIAPDE-1478

Update environment variables in values.yaml and refactor worker.py for improved worker preparation

- Removed KAFKA_BOOTSTRAP_SERVERS from environment variables in values.yaml.
- Added PYPI_SERVER environment variable for library distribution.
- Refactored worker.py to replace resource tuner and poller behavior with a new prepare_worker function, streamlining worker initialization and enhancing code clarity.

values.yaml

@@ -187,8 +187,6 @@ env:
   - name: OPC_URL
     value: "opc.tcp://sientia-opc-simulator-opc.sientia.svc.cluster.local:4840"
 
-  - name: KAFKA_BOOTSTRAP_SERVERS
-    value: "kafka.kafka.svc.cluster.local:9092"
 
   - name: LOG_LEVEL
     value: "DEBUG"
@@ -226,6 +224,9 @@ env:
   - name: MINIO_DEFAULT_BUCKET
     value: "sientia"
 
+  - name: PYPI_SERVER
+    value: "http://library-distribution-server.library.svc.cluster.local:5000"
+
 ssh:
   enabled: true
   secretName: git-ssh-key-sientia-laborious-worker