increasing test timeouts (elastic#92771)

BulkProcessor2IT can occasionally fail with timeouts like this:

```
java.util.concurrent.TimeoutException: (No message provided)

  at __randomizedtesting.SeedInfo.seed([164F04355E8E8724:9D44A00946BBB3F3]:0)
  at java.util.concurrent.Phaser.awaitAdvanceInterruptibly(Phaser.java:795)
  at org.elasticsearch.action.bulk.Retry2.awaitClose(Retry2.java:129)
  at org.elasticsearch.action.bulk.BulkProcessor2.awaitClose(BulkProcessor2.java:254)
  at org.elasticsearch.action.bulk.BulkProcessor2IT.testBulkProcessor2ConcurrentRequestsReadOnlyIndex(BulkProcessor2IT.java:197)
  at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(NativeMethodAccessorImpl.java:-2)
  at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
  at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
  at java.lang.reflect.Method.invoke(Method.java:568)
  at com.carrotsearch.randomizedtesting.RandomizedRunner.invoke(RandomizedRunner.java:1758)
  at com.carrotsearch.randomizedtesting.RandomizedRunner$8.evaluate(RandomizedRunner.java:946)
  at com.carrotsearch.randomizedtesting.RandomizedRunner$9.evaluate(RandomizedRunner.java:982)
  at com.carrotsearch.randomizedtesting.RandomizedRunner$10.evaluate(RandomizedRunner.java:996)
  at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
  at org.apache.lucene.tests.util.TestRuleSetupTeardownChained$1.evaluate(TestRuleSetupTeardownChained.java:44)
  at org.apache.lucene.tests.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:43)
  at org.apache.lucene.tests.util.TestRuleThreadAndTestName$1.evaluate(TestRuleThreadAndTestName.java:45)
  at org.apache.lucene.tests.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:60)
  at org.apache.lucene.tests.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:44)
  at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
  at com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:390)
  at com.carrotsearch.randomizedtesting.ThreadLeakControl.forkTimeoutingTask(ThreadLeakControl.java:843)
  at com.carrotsearch.randomizedtesting.ThreadLeakControl$3.evaluate(ThreadLeakControl.java:490)
  at com.carrotsearch.randomizedtesting.RandomizedRunner.runSingleTest(RandomizedRunner.java:955)
  at com.carrotsearch.randomizedtesting.RandomizedRunner$5.evaluate(RandomizedRunner.java:840)
  at com.carrotsearch.randomizedtesting.RandomizedRunner$6.evaluate(RandomizedRunner.java:891)
  at com.carrotsearch.randomizedtesting.RandomizedRunner$7.evaluate(RandomizedRunner.java:902)
  at org.apache.lucene.tests.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:43)
  at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
  at org.apache.lucene.tests.util.TestRuleStoreClassName$1.evaluate(TestRuleStoreClassName.java:38)
  at com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:40)
  at com.carrotsearch.randomizedtesting.rules.NoShadowingOrOverridesOnMethodsRule$1.evaluate(NoShadowingOrOverridesOnMethodsRule.java:40)
  at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
  at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
  at org.apache.lucene.tests.util.TestRuleAssertionsRequired$1.evaluate(TestRuleAssertionsRequired.java:53)
  at org.apache.lucene.tests.util.AbstractBeforeAfterRule$1.evaluate(AbstractBeforeAfterRule.java:43)
  at org.apache.lucene.tests.util.TestRuleMarkFailure$1.evaluate(TestRuleMarkFailure.java:44)
  at org.apache.lucene.tests.util.TestRuleIgnoreAfterMaxFailures$1.evaluate(TestRuleIgnoreAfterMaxFailures.java:60)
  at org.apache.lucene.tests.util.TestRuleIgnoreTestSuites$1.evaluate(TestRuleIgnoreTestSuites.java:47)
  at com.carrotsearch.randomizedtesting.rules.StatementAdapter.evaluate(StatementAdapter.java:36)
  at com.carrotsearch.randomizedtesting.ThreadLeakControl$StatementRunner.run(ThreadLeakControl.java:390)
  at com.carrotsearch.randomizedtesting.ThreadLeakControl.lambda$forkTimeoutingTask$0(ThreadLeakControl.java:850)
  at java.lang.Thread.run(Thread.java:833)
```

It looks like we're just cutting it a little too closely using a
1-second timeout to wait for all requests to complete. This PR bumps
that timeout to 5 seconds. In the previous version of this test
(BulkProcessorIT) the code did not actually wait for all requests to
complete, which explains why this behavior is new. Closes elastic#92770

Author: masseyke

server/src/internalClusterTest/java/org/elasticsearch/action/bulk/BulkProcessor2IT.java

@@ -68,7 +68,7 @@ public void testThatBulkProcessor2CountIsCorrect() throws Exception {
             assertMultiGetResponse(multiGetRequestBuilder.get(), numDocs);
             assertThat(processor.getTotalBytesInFlight(), equalTo(0L));
         } finally {
-            processor.awaitClose(1, TimeUnit.SECONDS);
+            processor.awaitClose(5, TimeUnit.SECONDS);
         }
     }
 
@@ -102,7 +102,7 @@ public void testBulkProcessor2ConcurrentRequests() throws Exception {
             assertThat(listener.bulkFailures.size(), equalTo(0));
             assertThat(listener.bulkItems.size(), equalTo(numDocs - numDocs % bulkActions));
         } finally {
-            processor.awaitClose(1, TimeUnit.SECONDS);
+            processor.awaitClose(5, TimeUnit.SECONDS);
         }
 
         closeLatch.await();
@@ -194,7 +194,7 @@ public void testBulkProcessor2ConcurrentRequestsReadOnlyIndex() throws Exception
                 }
             }
         } finally {
-            processor.awaitClose(1, TimeUnit.SECONDS);
+            processor.awaitClose(5, TimeUnit.SECONDS);
         }
 
         closeLatch.await();