Test Munin and Backups post-migration

I accidentally'd the Munin server by rebuilding it in the midst of RamNode migrating instances to a new datacenter slug. So my Munin server is down until Monday (they could fix things up earlier, but I figured I'd let the emergency weekend staff have a break...). For this issue: - [x] Make sure jeffgeerling.com stats are making it into the MM Munin server - [x] Make sure jeffgeerling.com content backups are making it into the MM Backup server Follow-up from #174.