Update AppArmor profile for tor/obfs4proxy

Originally created by @groente on #13581 (Redmine)

See https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=867342

Feature Branch: puppet-lizard-tails:bugfix/13581-apparmor-profile-tor-obfs4proxy

Related issues

• Related to #13582 (closed)
• Related to #14603 (closed)
• Blocks #13233 (closed)