HADOOP-19514: SecretManager logs at INFO in bin/hadoop calls

Closes #7537

Signed-off-by: Steve Loughran <stevel@apache.org>
Signed-off-by: Shilun Fan <slfan1989@apache.org>

hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/security/token/SecretManager.java

@@ -123,12 +123,12 @@ public abstract class SecretManager<T extends TokenIdentifier> {
     String algorithm = conf.get(
       CommonConfigurationKeysPublic.HADOOP_SECURITY_SECRET_MANAGER_KEY_GENERATOR_ALGORITHM_KEY,
       CommonConfigurationKeysPublic.HADOOP_SECURITY_SECRET_MANAGER_KEY_GENERATOR_ALGORITHM_DEFAULT);
-    LOG.info("Selected hash algorithm: {}", algorithm);
+    LOG.debug("Selected hash algorithm: {}", algorithm);
     SELECTED_ALGORITHM = algorithm;
     int length = conf.getInt(
       CommonConfigurationKeysPublic.HADOOP_SECURITY_SECRET_MANAGER_KEY_LENGTH_KEY,
       CommonConfigurationKeysPublic.HADOOP_SECURITY_SECRET_MANAGER_KEY_LENGTH_DEFAULT);
-    LOG.info("Selected hash key length:{}", length);
+    LOG.debug("Selected hash key length:{}", length);
     SELECTED_LENGTH = length;
   }