Suppress most logs in CoordinatorTests (#82793)

These tests cover a bunch of failure cases which means they generate a
lot of logs by design, but the logs are kind of useless: the tests are
deterministic so we can reproduce any failures locally, and typically
the default logs aren't enough for debugging anyway. Moreover if enough
of these tests fail then we can apparently get Gradle to OOM which is
much harder to debug.

With this commit we turn the log verbosity down on these tests down as
far as possible.

Author: DaveCTurner

server/src/test/java/org/elasticsearch/cluster/coordination/CoordinatorTests.java

@@ -93,6 +93,7 @@
 import static org.hamcrest.Matchers.sameInstance;
 import static org.hamcrest.Matchers.startsWith;
 
+@TestLogging(reason = "these tests do a lot of log-worthy things but we usually don't care", value = "org.elasticsearch:FATAL")
 public class CoordinatorTests extends AbstractCoordinatorTestCase {
 
     /**
@@ -1478,6 +1479,10 @@ public void testNodeCannotJoinIfJoinValidationFailsOnMaster() {
         }
     }
 
+    @TestLogging(
+        reason = "test includes assertions about Coordinator and JoinHelper logging",
+        value = "org.elasticsearch.cluster.coordination.Coordinator:WARN,org.elasticsearch.cluster.coordination.JoinHelper:INFO"
+    )
     public void testNodeCannotJoinIfJoinPingValidationFailsOnMaster() throws IllegalAccessException {
         try (Cluster cluster = new Cluster(randomIntBetween(1, 3))) {
             cluster.runRandomly();
@@ -1578,6 +1583,10 @@ public void testClusterCannotFormWithFailingJoinValidation() {
         }
     }
 
+    @TestLogging(
+        reason = "test includes assertions about JoinHelper logging",
+        value = "org.elasticsearch.cluster.coordination.JoinHelper:INFO"
+    )
     public void testCannotJoinClusterWithDifferentUUID() throws IllegalAccessException {
         try (Cluster cluster1 = new Cluster(randomIntBetween(1, 3))) {
             cluster1.runRandomly();
@@ -1854,6 +1863,10 @@ public void testClusterRecoversAfterExceptionDuringSerialization() {
         }
     }
 
+    @TestLogging(
+        reason = "testing ClusterFormationFailureHelper logging",
+        value = "org.elasticsearch.cluster.coordination.ClusterFormationFailureHelper:WARN"
+    )
     public void testLogsWarningPeriodicallyIfClusterNotFormed() throws IllegalAccessException {
         final long warningDelayMillis;
         final Settings settings;
@@ -1948,7 +1961,11 @@ public void assertMatched() {
         }
     }
 
-    @TestLogging(reason = "testing debug logging of LagDetector", value = "org.elasticsearch.cluster.coordination.LagDetector:DEBUG")
+    @TestLogging(
+        reason = "testing LagDetector and CoordinatorPublication logging",
+        value = "org.elasticsearch.cluster.coordination.LagDetector:DEBUG,"
+            + "org.elasticsearch.cluster.coordination.Coordinator.CoordinatorPublication:INFO"
+    )
     public void testLogsMessagesIfPublicationDelayed() throws IllegalAccessException {
         try (Cluster cluster = new Cluster(between(3, 5))) {
             cluster.runRandomly();