(GH-30) Update repack logging to separate files

[jarretlavallee]

Prior to this commit, the repack maintenance jobs would all log to
output.log and clobber the log each time a job ran. This commit moves
the logs for each repack into their own file so they do not overwrite
other repack jobs logs.

[puppet-community-rangefinder]

pe_databases::maintenance::pg_repack is a class

that may have no external impact to Forge modules.

This module is declared in 0 of 575 indexed public Puppetfiles.

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These results were generated with Rangefinder, a tool that helps predict the downstream impact of breaking changes to elements used in Puppet modules. You can run this on the command line to get a full report.

Exact matches are those that we can positively identify via namespace and the declaring modules' metadata. Non-namespaced items, such as Puppet 3.x functions, will always be reported as near matches only.

[jarretlavallee]

This should resolve #30

[Sharpie]

Looks good to me 👍