/etc/apparmor.d/abstractions/apache2-common is in apparmor 2.10.95-0ubuntu2.6~14.04.4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 | # vim:syntax=apparmor
# This file contains basic permissions for Apache and every vHost
  #include <abstractions/nameservice>
  # Apache
  network inet stream,
  network inet6 stream,
  # apache manual, error pages and icons
  /usr/share/apache2/** r,
  # changehat itself
  @{PROC}/@{pid}/attr/current                        w,
  # htaccess files - for what ever it is worth
  /**/.htaccess            r,
  /dev/urandom            r,
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