[apparmor] [Merge] ~sdeziel/apparmor-profiles/+git/apparmor-profiles:ssmtp-system-dead-letter into apparmor-profiles:master

[Steve Beattie]

Review: Approve

Thanks, looks good, merged
-- 
https://code.launchpad.net/~sdeziel/apparmor-profiles/+git/apparmor-profiles/+merge/309894
Your team AppArmor Developers is subscribed to branch apparmor-profiles:master.