(INF-3292) Move xdmod rsync cron image

[williamnswanson]

Copied from https://github.com/jasoncpatton/xdmod-ospool-fetch into the images repo.

Also add the --delete flag to the generated cron's rsync command for mirroring.

@jasoncpatton, I think I put it in the right spot, can you confirm?

[brianhlin]

@williamnswanson can you create a build-config.json like https://github.com/opensciencegrid/images/blob/main/opensciencegrid/central-syslog/build-config.json? Something like the following:

{
    "standard_build": true,
    "repo_build": false,
    "base_os": ["el9"],
    "osg_series": ["25"],
    "base_repo": ["release"]
  }

(I don't think the standard_build or repo_build do anything...)

[jasoncpatton]

This LGTM, I think the --delete is correct per the man page. Feel free to change/remove the LICENSE to have it fall under the rest of the images repo.

[jasoncpatton]

This seems correct to me, per the rsync man page (emphasis added):

--delete delete extraneous files from **dest** dirs

[jasoncpatton]

I give permission to change the ©️ here or remove the LICENSE entirely since it's going into a organization-owned repo.

[jasoncpatton]

And thanks for moving this over here!