Do not swallow reporting exceptions

spring-configuration-aggregator-maven-plugin/src/main/java/com/github/egoettelmann/spring/configuration/extensions/aggregator/maven/components/reporting/DefaultReportingService.java

@@ -93,7 +93,7 @@ public void save(final ArtifactMetadata metadata, final OutputReport outputRepor
                 return;
             }
         } catch (final Exception e) {
-            throw new OperationFailedException("Failed to write report " + outputReport.getType());
+            throw new OperationFailedException("Failed to write report " + outputReport.getType(), e);
         }
 
         // No appropriate writer found for report