add logs

Author: sakthivelmanii

google-cloud-spanner/src/test/java/com/google/cloud/spanner/MultiplexedSessionDatabaseClientMockServerTest.java

@@ -307,7 +307,7 @@ public void testDeadlineExceededErrorWithOneRetry() {
   public void testDeadlineExceededErrorWithOneRetryWithParallelRequests()
       throws InterruptedException {
     System.out.println(
-        "---------------------------------------------------------------------------");
+        "---------------------------------------------------------------------------START");
     mockSpanner.setCreateSessionExecutionTime(
         SimulatedExecutionTime.ofExceptions(
             Arrays.asList(
@@ -367,6 +367,8 @@ public void testDeadlineExceededErrorWithOneRetryWithParallelRequests()
       }
     }
 
+    System.out.println(
+        "---------------------------------------------------------------------------END");
     failureCountDownLatch.await(2, TimeUnit.SECONDS);
     assertEquals(0, failureCountDownLatch.getCount());
 
@@ -411,9 +413,6 @@ public void testDeadlineExceededErrorWithOneRetryWithParallelRequests()
     assertEquals(3L, client.multiplexedSessionDatabaseClient.getNumSessionsReleased().get());
 
     testSpanner.close();
-
-    System.out.println(
-        "---------------------------------------------------------------------------");
   }
 
   @Test