/usr/ is in shibboleth-sp2-schemas 2.4.3+dfsg-2ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/
/usr/share/xml/
/usr/share/xml/shibboleth/
/usr/share/xml/shibboleth/catalog.xml
/usr/share/xml/shibboleth/shibboleth.xsd
/usr/share/xml/shibboleth/shibboleth-metadata-1.0.xsd
/usr/share/xml/shibboleth/shibboleth-2.0-native-sp-config.xsd
/usr/share/xml/shibboleth/shibboleth-2.0-native-sp-protocols.xsd
/usr/share/xml/shibboleth/shibboleth-2.0-sp-notify.xsd
/usr/share/xml/shibboleth/shibboleth-2.0-afp.xsd
/usr/share/xml/shibboleth/shibboleth-2.0-afp-mf-basic.xsd
/usr/share/xml/shibboleth/shibboleth-2.0-afp-mf-saml.xsd
/usr/share/xml/shibboleth/shibboleth-2.0-attribute-map.xsd
/usr/share/doc/
/usr/share/doc/shibboleth-sp2-schemas/
/usr/share/doc/shibboleth-sp2-schemas/NOTICE.txt
/usr/share/doc/shibboleth-sp2-schemas/copyright
/usr/share/doc/shibboleth-sp2-schemas/changelog.Debian.gz