KNOX-2883 Missing attach logging context from HadoopAuthFilter (#733)

diff --git a/gateway-provider-security-hadoopauth/src/main/java/org/apache/knox/gateway/hadoopauth/filter/HadoopAuthFilter.java b/gateway-provider-security-hadoopauth/src/main/java/org/apache/knox/gateway/hadoopauth/filter/HadoopAuthFilter.java
index 98e03d1..3c30be6 100755
--- a/gateway-provider-security-hadoopauth/src/main/java/org/apache/knox/gateway/hadoopauth/filter/HadoopAuthFilter.java
+++ b/gateway-provider-security-hadoopauth/src/main/java/org/apache/knox/gateway/hadoopauth/filter/HadoopAuthFilter.java
@@ -253,6 +253,7 @@
     AuditContext context = auditService.getContext();
     if (context != null) {
       context.setUsername( principal.getName() );
+      auditService.attachContext(context);
       String sourceUri = (String)request.getAttribute( AbstractGatewayFilter.SOURCE_REQUEST_CONTEXT_URL_ATTRIBUTE_NAME );
       if (sourceUri != null) {
         auditor.audit( Action.AUTHENTICATION , sourceUri, ResourceType.URI, ActionOutcome.SUCCESS );