LIST parameter is used incorrectly as a file tag

The LIST parameter to the list policy in list-30day-with-excludes is used incorrectly. This is meant to be references to an external list rule that associates a script to process the file list though. It is not meant as a tag to append on the output file (though it does function that way). See LIST and EXTERNAL LIST in the policy terms docs:

https://www.ibm.com/docs/en/spectrum-scale/4.2.3?topic=rules-policy-terms

This use needs to be corrected to avoid a warning in the policy log run:

[W] Attention: In RULE 'old_files' LIST name '2022-02-28-12:27:49' appears but there is no corresponding "EXTERNAL LIST '2022-02-28-12:27:49' EXEC ... OPTS ..." rule to specify a program to process the matching files.