JAVA-2830: Re-enable tailable cursor tests

Re-enable tailable cursor tests that were disabled due to a server
bug that has since been fixed.

Author: jyemin

driver-core/src/test/functional/com/mongodb/operation/AsyncQueryBatchCursorFunctionalSpecification.groovy

@@ -52,11 +52,10 @@ import static com.mongodb.ClusterFixture.getReadConnectionSource
 import static com.mongodb.ClusterFixture.getReferenceCountAfterTimeout
 import static com.mongodb.ClusterFixture.isDiscoverableReplicaSet
 import static com.mongodb.ClusterFixture.isSharded
-import static com.mongodb.ClusterFixture.serverVersionAtLeast
 import static com.mongodb.connection.ServerHelper.waitForLastRelease
 import static com.mongodb.connection.ServerHelper.waitForRelease
-import static com.mongodb.operation.OperationHelper.cursorDocumentToQueryResult
 import static com.mongodb.internal.operation.ServerVersionHelper.serverIsAtLeastVersionThreeDotTwo
+import static com.mongodb.operation.OperationHelper.cursorDocumentToQueryResult
 import static java.util.Arrays.asList
 import static java.util.concurrent.TimeUnit.SECONDS
 import static org.junit.Assert.assertEquals
@@ -262,7 +261,6 @@ class AsyncQueryBatchCursorFunctionalSpecification extends OperationFunctionalSp
     }
 
     @Category(Slow)
-    @IgnoreIf({ serverVersionAtLeast(3, 7) && isSharded() })
     def 'should block waiting for next batch on a tailable cursor'() {
         collectionHelper.create(collectionName, new CreateCollectionOptions().capped(true).sizeInBytes(1000))
         collectionHelper.insertDocuments(new DocumentCodec(), new Document('_id', 1).append('ts', new BsonTimestamp(5, 0)))

driver-core/src/test/functional/com/mongodb/operation/ChangeStreamOperationSpecification.groovy

@@ -40,7 +40,6 @@ import spock.lang.IgnoreIf
 
 import static com.mongodb.ClusterFixture.getAsyncCluster
 import static com.mongodb.ClusterFixture.getCluster
-import static com.mongodb.ClusterFixture.isSharded
 import static com.mongodb.ClusterFixture.isStandalone
 import static com.mongodb.ClusterFixture.serverVersionAtLeast
 import static com.mongodb.connection.ServerHelper.waitForLastRelease
@@ -293,7 +292,6 @@ class ChangeStreamOperationSpecification extends OperationFunctionalSpecificatio
         async << [true, false]
     }
 
-    @IgnoreIf({ serverVersionAtLeast(3, 7) && isSharded() })
     def 'should act like a tailable cursor'() {
         given:
         def helper = getHelper()

driver-core/src/test/functional/com/mongodb/operation/QueryBatchCursorFunctionalSpecification.groovy

@@ -187,7 +187,6 @@ class QueryBatchCursorFunctionalSpecification extends OperationFunctionalSpecifi
 
     @SuppressWarnings('EmptyCatchBlock')
     @Category(Slow)
-    @IgnoreIf({ serverVersionAtLeast(3, 7) && isSharded() })
     def 'should block waiting for next batch on a tailable cursor'() {
         given:
         def connection = connectionSource.getConnection()
@@ -236,7 +235,6 @@ class QueryBatchCursorFunctionalSpecification extends OperationFunctionalSpecifi
     }
 
     @Category(Slow)
-    @IgnoreIf({ serverVersionAtLeast(3, 7) && isSharded() })
     def 'test try next with tailable'() {
         collectionHelper.create(collectionName, new CreateCollectionOptions().capped(true).sizeInBytes(1000))
         collectionHelper.insertDocuments(new DocumentCodec(), new Document('_id', 1).append('ts', new BsonTimestamp(5, 0)))