Changing file permissions to be uniform across all frequencies

[jrk07]

Currently the permissions for daily, hourly, and monthly are all 0644, while weekly is 0640. Recommending it is updated to 0644 to be uniform across the board unless there is a particular reason weekly should be different.

---

This change is 

[jrk07]

Please note that the checks failing has nothing to do with this PR itself. Recommended this be pulled into master so that it does not impact future consumers of this module.

[davidnewhall]

+1

[TomyLobo]

@jrk07 Just curious, what's your rationale for 644 vs. 640? 640 seems to be a more secure alternative, while cron, running as root, would still be able to read it.