fix: update test command in local_testing/test.sh and improve header access in kafka_client

- Changed the test command in local_testing/test.sh to run 'make test' instead of 'make test_all' for more focused testing.
- Updated the SendAndReceive method in kafka_client to use getter methods for ApiKey, ApiVersion, and CorrelationId, enhancing encapsulation and code clarity.

Author: ryan-gang

protocol/kafka_client/client.go

@@ -110,9 +110,9 @@ func (c *Client) Close() error {
 
 func (c *Client) SendAndReceive(request builder.RequestI, stageLogger *logger.Logger) (Response, error) {
 	header := request.GetHeader()
-	apiType := protocol.APIKeyToName(header.ApiKey)
-	apiVersion := header.ApiVersion
-	correlationId := header.CorrelationId
+	apiType := protocol.APIKeyToName(header.GetApiKey())
+	apiVersion := header.GetApiVersion()
+	correlationId := header.GetCorrelationId()
 	message := request.Encode()
 
 	stageLogger.Infof("Sending \"%s\" (version: %v) request (Correlation id: %v)", apiType, apiVersion, correlationId)