Reduce TestLogging usage in DisruptionIT tests (#43411)

Removes `@TestLogging` annotations in `*DisruptionIT` tests, so that the only
tests with annotations are those with open issues. Also adds links to the open
issues in the remaining cases.

Relates #43403

server/src/test/java/org/elasticsearch/discovery/ClusterDisruptionIT.java

@@ -84,7 +84,6 @@ import static org.hamcrest.Matchers.not;
 /**
  * Tests various cluster operations (e.g., indexing) during disruptions.
  */
-@TestLogging("_root:DEBUG,org.elasticsearch.cluster.service:TRACE")
 @ESIntegTestCase.ClusterScope(scope = ESIntegTestCase.Scope.TEST, numDataNodes = 0)
 public class ClusterDisruptionIT extends AbstractDisruptionTestCase {
 
@@ -110,6 +109,7 @@ public class ClusterDisruptionIT extends AbstractDisruptionTestCase {
         "org.elasticsearch.discovery:TRACE,org.elasticsearch.action.support.replication:TRACE," +
         "org.elasticsearch.cluster.service:TRACE,org.elasticsearch.indices.recovery:TRACE," +
         "org.elasticsearch.indices.cluster:TRACE,org.elasticsearch.index.shard:TRACE")
+    // TestLogging for https://github.com/elastic/elasticsearch/issues/41068
     public void testAckedIndexing() throws Exception {
 
         final int seconds = !(TEST_NIGHTLY && rarely()) ? 1 : 5;

server/src/test/java/org/elasticsearch/discovery/DiscoveryDisruptionIT.java

@@ -31,7 +31,6 @@ import org.elasticsearch.test.disruption.NetworkDisruption;
 import org.elasticsearch.test.disruption.NetworkDisruption.NetworkDisconnect;
 import org.elasticsearch.test.disruption.ServiceDisruptionScheme;
 import org.elasticsearch.test.disruption.SlowClusterStateProcessing;
-import org.elasticsearch.test.junit.annotations.TestLogging;
 import org.elasticsearch.test.transport.MockTransportService;
 import org.elasticsearch.transport.Transport;
 import org.elasticsearch.transport.TransportService;
@@ -47,7 +46,6 @@ import static org.elasticsearch.cluster.metadata.IndexMetaData.INDEX_NUMBER_OF_S
 /**
  * Tests for discovery during disruptions.
  */
-@TestLogging("_root:DEBUG,org.elasticsearch.cluster.service:TRACE")
 @ESIntegTestCase.ClusterScope(scope = ESIntegTestCase.Scope.TEST, numDataNodes = 0)
 public class DiscoveryDisruptionIT extends AbstractDisruptionTestCase {
 

server/src/test/java/org/elasticsearch/discovery/DiskDisruptionIT.java

@@ -30,7 +30,6 @@ import org.elasticsearch.index.seqno.SequenceNumbers;
 import org.elasticsearch.test.BackgroundIndexer;
 import org.elasticsearch.test.ESIntegTestCase;
 import org.elasticsearch.test.InternalTestCluster;
-import org.elasticsearch.test.junit.annotations.TestLogging;
 import org.junit.After;
 import org.junit.AfterClass;
 import org.junit.BeforeClass;
@@ -49,7 +48,6 @@ import java.util.concurrent.atomic.AtomicBoolean;
 import static org.elasticsearch.test.hamcrest.ElasticsearchAssertions.assertAcked;
 import static org.hamcrest.Matchers.greaterThanOrEqualTo;
 
-@TestLogging("_root:DEBUG,org.elasticsearch.cluster.service:TRACE")
 @ESIntegTestCase.ClusterScope(scope = ESIntegTestCase.Scope.TEST, numDataNodes = 0)
 public class DiskDisruptionIT extends AbstractDisruptionTestCase {
 

server/src/test/java/org/elasticsearch/discovery/MasterDisruptionIT.java

@@ -36,7 +36,6 @@ import org.elasticsearch.test.disruption.NetworkDisruption;
 import org.elasticsearch.test.disruption.NetworkDisruption.TwoPartitions;
 import org.elasticsearch.test.disruption.ServiceDisruptionScheme;
 import org.elasticsearch.test.disruption.SingleNodeDisruption;
-import org.elasticsearch.test.junit.annotations.TestLogging;
 
 import java.util.ArrayList;
 import java.util.HashSet;
@@ -50,7 +49,6 @@ import static org.hamcrest.Matchers.not;
 /**
  * Tests relating to the loss of the master.
  */
-@TestLogging("_root:DEBUG,org.elasticsearch.cluster.service:TRACE")
 @ESIntegTestCase.ClusterScope(scope = ESIntegTestCase.Scope.TEST, numDataNodes = 0)
 public class MasterDisruptionIT extends AbstractDisruptionTestCase {
 

server/src/test/java/org/elasticsearch/discovery/StableMasterDisruptionIT.java

@@ -65,7 +65,6 @@ import static org.hamcrest.Matchers.equalTo;
  * Tests relating to the loss of the master, but which work with the default fault detection settings which are rather lenient and will
  * not detect a master failure too quickly.
  */
-@TestLogging("_root:DEBUG,org.elasticsearch.cluster.service:TRACE")
 @ESIntegTestCase.ClusterScope(scope = ESIntegTestCase.Scope.TEST, numDataNodes = 0)
 public class StableMasterDisruptionIT extends ESIntegTestCase {
 
@@ -174,6 +173,8 @@ public class StableMasterDisruptionIT extends ESIntegTestCase {
      * Tests that emulates a frozen elected master node that unfreezes and pushes its cluster state to other nodes that already are
      * following another elected master node. These nodes should reject this cluster state and prevent them from following the stale master.
      */
+    @TestLogging("_root:DEBUG,org.elasticsearch.cluster.service:TRACE")
+    // TestLogging for https://github.com/elastic/elasticsearch/issues/43392
     public void testStaleMasterNotHijackingMajority() throws Exception {
         final List<String> nodes = internalCluster().startNodes(3, Settings.builder()
             .put(LeaderChecker.LEADER_CHECK_TIMEOUT_SETTING.getKey(), "1s")