Core work 2017Q2: Sysadmin (Maintain our already existing services)

Originally created by @intrigeri on #13232 (Redmine)

2017Q2 is almost over, so this is meant to be an example (similar to tails/tails#12431 & tails/tails#12432) to feed the discussion about how we handle time-based core work.

Note: this was reverse-engineered from Puppet Git logs, so it probably lacks lots of work that was done.

Parent Task: tails/accounting#13247

Related issues

• Related to tails/sysadmin#13233
• Blocked by tails/sysadmin#11523
• Blocked by tails/sysadmin#13134
• Blocked by tails/sysadmin#12414
• Blocked by tails/sysadmin#13138
• Blocked by #12565 (closed)
• Blocked by tails/sysadmin#12097
• Blocked by tails/sysadmin#12422
• Blocked by tails/sysadmin#12425
• Blocked by #13177 (closed)