What is the bug?
hash.sh script should return only password, but now it returns

**************************************************************************
** This tool will be deprecated in the next major release of OpenSearch **
** https://github.com/opensearch-project/security/issues/1755           **
**************************************************************************
$2y$12$qqrlE8ZCdZOg4AwU5vjKO.MYFR4iGovWXsrY5LHlmxTgU3UJq7COG

as a result of password hash. Could you please separate streams for output and deprecation message?

How can one reproduce the bug?
Steps to reproduce the behavior:

1. Run in OpenSearch pod:

   password=$("${OPENSEARCH_HOME}/plugins/opensearch-security/tools/hash.sh" -p "basic") 
   

2. Check what is inside password variable:

   echo "$password"
   

3. Now result is as follows:

   **************************************************************************
   ** This tool will be deprecated in the next major release of OpenSearch **
   ** https://github.com/opensearch-project/security/issues/1755           **
   **************************************************************************
   $2y$12$qqrlE8ZCdZOg4AwU5vjKO.MYFR4iGovWXsrY5LHlmxTgU3UJq7COG
   

What is the expected behavior?
hash.sh script should return only password.

What is your host/environment?

• Version: 2.4.1