Don't log the cancellation exception. (#52)

Get a consistent implementation with respect to other calculation services.

src/main/java/org/gridsuite/sensitivityanalysis/server/service/SensitivityAnalysisWorkerService.java

@@ -41,6 +41,7 @@
 import java.util.function.Consumer;
 import java.util.function.Function;
 
+import static org.gridsuite.sensitivityanalysis.server.service.NotificationService.CANCEL_MESSAGE;
 import static org.gridsuite.sensitivityanalysis.server.service.NotificationService.FAIL_MESSAGE;
 
 /**
@@ -211,6 +212,7 @@ private void cancelSensitivityAnalysisAsync(SensitivityAnalysisCancelContext can
     private void cleanSensitivityAnalysisResultsAndPublishCancel(UUID resultUuid, String receiver) {
         resultRepository.delete(resultUuid);
         notificationService.publishStop(resultUuid, receiver);
+        LOGGER.info(CANCEL_MESSAGE + " (resultUuid='{}')", resultUuid);
     }
 
     @Bean
@@ -241,8 +243,8 @@ public Consumer<Message<String>> consumeRun() {
             } catch (InterruptedException e) {
                 Thread.currentThread().interrupt();
             } catch (Exception | OutOfMemoryError e) {
-                LOGGER.error(FAIL_MESSAGE, e);
                 if (!(e instanceof CancellationException)) {
+                    LOGGER.error(FAIL_MESSAGE, e);
                     notificationService.publishFail(resultContext.getResultUuid(), resultContext.getRunContext().getReceiver(), e.getMessage());
                     resultRepository.delete(resultContext.getResultUuid());
                     resultRepository.insertStatus(List.of(resultContext.getResultUuid()), SensitivityAnalysisStatus.FAILED.name());