HDDS-7066. Include number of tests requested in Freon output (#3638)

diff --git a/hadoop-ozone/tools/src/main/java/org/apache/hadoop/ozone/freon/BaseFreonGenerator.java b/hadoop-ozone/tools/src/main/java/org/apache/hadoop/ozone/freon/BaseFreonGenerator.java
index 710efa3..8f0b007 100644
--- a/hadoop-ozone/tools/src/main/java/org/apache/hadoop/ozone/freon/BaseFreonGenerator.java
+++ b/hadoop-ozone/tools/src/main/java/org/apache/hadoop/ozone/freon/BaseFreonGenerator.java
@@ -250,7 +250,8 @@
       //replace environment variables to support multi-node execution
       prefix = resolvePrefix(prefix);
     }
-    LOG.info("Executing test with prefix {}", prefix);
+    LOG.info("Executing test with prefix {} " +
+        "and number-of-tests {}", prefix, testNo);
 
     pathSchema = new PathSchema(prefix);
 
@@ -301,6 +302,11 @@
         Math.round((System.currentTimeMillis() - startTime) / 1000.0));
     messages.add("Failures: " + failureCounter.get());
     messages.add("Successful executions: " + successCounter.get());
+    if (failureCounter.get() > 0) {
+      messages.add("Expected " + testNo
+          + " --number-of-tests objects!, successfully executed "
+          + successCounter.get());
+    }
 
     Consumer<String> print = freonCommand.isInteractive()
         ? System.out::println