this is the bug that causes the thumbnails to be blank for camera-app
and gallery-app snaps

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  libapparmor's aa_query_label() always returns allowed = 0 for file
  rules containing the "owner" conditional

Status in AppArmor:
Status in Snappy:
  Won't Fix
Status in apparmor package in Ubuntu:

Bug description:
  Steps to reproduce:
  1. Download and compile the following sample C app that calls aa_query_label

  gcc -o query_file query_file.c -l apparmor

  2. Install a snap that uses the home interface, for example demo-wget:

  snap install demo-wget

  3. Create a file in your home:

  touch /home/USERNAME/testfile

  4. Ask apparmor if demo-wget can read that file with query_file:

  ./query_file snap.demo-wget.wget /home/USERNAME/testfile

  Expected result:

  output of ./query_file command is 
  read '/home/kaleo/toto' allowed

  Current result:

  output of ./query_file command is 
  read '/home/kaleo/toto' denied

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