Comment 16 for bug 1583794

The htop package in the store does not specify "plugs: [ system-observe ]" in its yaml so I had to fetch it, unsquash it, adjust meta/snap.yaml to have plugs, snapcraft snap ./squashfs-root, then install to test. After doing that I can do 'sudo snap connect htop:system-observe ubuntu-core:system-observe' and verify this bug: htop now shows the process list.