/usr/ is in ubuntu-core-security-seccomp 16.04.15.1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/
/usr/share/seccomp/
/usr/share/seccomp/templates/
/usr/share/seccomp/templates/ubuntu-core/
/usr/share/seccomp/templates/ubuntu-core/16.04/
/usr/share/seccomp/templates/ubuntu-core/16.04/unconfined
/usr/share/seccomp/templates/ubuntu-core/16.04/default
/usr/share/seccomp/policygroups/
/usr/share/seccomp/policygroups/ubuntu-core/
/usr/share/seccomp/policygroups/ubuntu-core/16.04/
/usr/share/seccomp/policygroups/ubuntu-core/16.04/container-management
/usr/share/seccomp/policygroups/ubuntu-core/16.04/desktop
/usr/share/seccomp/policygroups/ubuntu-core/16.04/physical-memory-access
/usr/share/seccomp/policygroups/ubuntu-core/16.04/network-client
/usr/share/seccomp/policygroups/ubuntu-core/16.04/locale-management
/usr/share/seccomp/policygroups/ubuntu-core/16.04/snap-management
/usr/share/seccomp/policygroups/ubuntu-core/16.04/network-monitor
/usr/share/seccomp/policygroups/ubuntu-core/16.04/mir-client
/usr/share/seccomp/policygroups/ubuntu-core/16.04/read-system-logs
/usr/share/seccomp/policygroups/ubuntu-core/16.04/network-listener
/usr/share/seccomp/policygroups/ubuntu-core/16.04/unix-listener
/usr/share/seccomp/policygroups/ubuntu-core/16.04/network-management
/usr/share/seccomp/policygroups/ubuntu-core/16.04/display-server
/usr/share/seccomp/policygroups/ubuntu-core/16.04/update-schedule-management
/usr/share/seccomp/policygroups/ubuntu-core/16.04/system-monitor
/usr/share/seccomp/policygroups/ubuntu-core/16.04/timeserver-management
/usr/share/seccomp/policygroups/ubuntu-core/16.04/firewall-management
/usr/share/seccomp/policygroups/ubuntu-core/16.04/timezone-management
/usr/share/doc/
/usr/share/doc/ubuntu-core-security-seccomp/
/usr/share/doc/ubuntu-core-security-seccomp/changelog.gz
/usr/share/doc/ubuntu-core-security-seccomp/copyright
/usr/share/seccomp/policygroups/ubuntu-core/16.04/network-service
/usr/share/seccomp/policygroups/ubuntu-core/16.04/snapd
/usr/share/seccomp/policygroups/ubuntu-core/16.04/network-firewall
/usr/share/seccomp/policygroups/ubuntu-core/16.04/network-status
/usr/share/seccomp/policygroups/ubuntu-core/16.04/network-admin