HDDS-6936. Mark TestContainerStateMachineFailures#testApplyTransactionFailure as flaky (#3538)

diff --git a/hadoop-ozone/integration-test/src/test/java/org/apache/hadoop/ozone/client/rpc/TestContainerStateMachineFailures.java b/hadoop-ozone/integration-test/src/test/java/org/apache/hadoop/ozone/client/rpc/TestContainerStateMachineFailures.java
index 54b51ac..58eb49a 100644
--- a/hadoop-ozone/integration-test/src/test/java/org/apache/hadoop/ozone/client/rpc/TestContainerStateMachineFailures.java
+++ b/hadoop-ozone/integration-test/src/test/java/org/apache/hadoop/ozone/client/rpc/TestContainerStateMachineFailures.java
@@ -386,6 +386,7 @@
   }
 
   @Test
+  @Flaky("HDDS-6935")
   public void testApplyTransactionFailure() throws Exception {
     OzoneOutputStream key =
             objectStore.getVolume(volumeName).getBucket(bucketName)