pg_repack cron output is logged to the same file and clobbered

[andrewm3]

The pg_repack cronjobs all log to the same file and overwrite it when they run, making it difficult to troubleshoot certain jobs.

The logs should be appended or each job should have it's own file.

Relevant code in manifests/maintenance/pg_repack.pp:

 $logging = "> ${logging_directory}/output.log 2>&1"

[npwalker]

@andrewm3 I think this was a conscious decision because I didn't want to deal with log rotation.

Thoughts on how to deal with an ever-growing log?

[andrewm3]

I think that's fair. It's more important that each job doesn't clobber the output of the other than keeping a long running record IMO, so perhaps just different files for each one would be sufficient.

[jarretlavallee]

Merged in #43