/usr/share/ is in strongswan-tnc-base 5.1.2-0ubuntu2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/strongswan/
/usr/share/strongswan/templates/
/usr/share/strongswan/templates/config/
/usr/share/strongswan/templates/config/strongswan.d/
/usr/share/strongswan/templates/config/strongswan.d/tnc.conf
/usr/share/strongswan/templates/config/strongswan.d/imcv.conf
/usr/share/strongswan/templates/config/plugins/
/usr/share/strongswan/templates/config/plugins/tnccs-dynamic.conf
/usr/share/strongswan/templates/config/plugins/tnccs-20.conf
/usr/share/strongswan/templates/config/plugins/tnc-tnccs.conf
/usr/share/strongswan/templates/config/plugins/tnccs-11.conf
/usr/share/doc/
/usr/share/doc/strongswan-tnc-base/
/usr/share/doc/strongswan-tnc-base/copyright
/usr/share/doc/strongswan-tnc-base/NEWS.Debian.gz
/usr/share/doc/strongswan-tnc-base/changelog.Debian.gz