SIENTIAPDE-1325

SIENTIAPDE-1325 Add OPC server name configuration and update repository handling

- Introduced a new environment variable `OPC_SERVER_NAME` in values.yaml with a default value.
- Updated the OPC class to include `server_name` when initializing OpcRepository.
- Enhanced the configuration builder to retrieve `OPC_SERVER_NAME` from the environment.
- Adjusted OpcRepository to store and utilize the `server_name` for metric emissions.

laborious/activities/opc.py

@@ -79,6 +79,7 @@ class OPC(SientiaMonitoring):
         for opc_id, server in self.opc_servers.items():
             self.opc_repository[opc_id] = OpcRepository(
                 opc_id=server['id'],
+                server_name=server['server_name'],
                 url=server['url'],
                 logger=self.logger,
                 server_uri=server['server_uri'],