Fix AzureRepositoryF to handle exceptions on close

Fix TribeUnitTests to handle exceptions on close

plugins/repository-azure/src/test/java/org/elasticsearch/repositories/azure/AzureRepositoryF.java

@@ -19,12 +19,15 @@
 
 package org.elasticsearch.repositories.azure;
 
+import org.apache.lucene.util.IOUtils;
+import org.elasticsearch.ElasticsearchException;
 import org.elasticsearch.Version;
 import org.elasticsearch.common.settings.Settings;
 import org.elasticsearch.node.MockNode;
 import org.elasticsearch.node.Node;
 import org.elasticsearch.plugin.repository.azure.AzureRepositoryPlugin;
 
+import java.io.IOException;
 import java.util.Collections;
 import java.util.concurrent.CountDownLatch;
 
@@ -112,7 +115,11 @@ public class AzureRepositoryF {
         Runtime.getRuntime().addShutdownHook(new Thread() {
             @Override
             public void run() {
-                node.close();
+                try {
+                    IOUtils.close(node);
+                } catch (IOException e) {
+                    throw new ElasticsearchException(e);
+                }
                 latch.countDown();
             }
         });

qa/evil-tests/src/test/java/org/elasticsearch/tribe/TribeUnitTests.java

@@ -19,6 +19,7 @@
 
 package org.elasticsearch.tribe;
 
+import org.apache.lucene.util.IOUtils;
 import org.elasticsearch.client.Client;
 import org.elasticsearch.cluster.ClusterState;
 import org.elasticsearch.cluster.node.DiscoveryNode;
@@ -34,6 +35,7 @@ import org.elasticsearch.test.InternalTestCluster;
 import org.junit.AfterClass;
 import org.junit.BeforeClass;
 
+import java.io.IOException;
 import java.nio.file.Path;
 
 import static org.hamcrest.CoreMatchers.either;
@@ -76,10 +78,9 @@ public class TribeUnitTests extends ESTestCase {
     }
 
     @AfterClass
-    public static void closeTribes() {
-        tribe1.close();
+    public static void closeTribes() throws IOException {
+        IOUtils.close(tribe1, tribe2);
         tribe1 = null;
-        tribe2.close();
         tribe2 = null;
     }