/usr/share/pki/ is in pki-base 10.6.0-1ubuntu2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/pki/upgrade/10.0.3/
/usr/share/pki/VERSION
/usr/share/pki/etc/
/usr/share/pki/etc/logging.properties
/usr/share/pki/etc/pki.conf
/usr/share/pki/etc/tomcat.conf
/usr/share/pki/examples/
/usr/share/pki/examples/java/
/usr/share/pki/examples/java/CACertClientExample.java
/usr/share/pki/examples/java/CAClientExample.java
/usr/share/pki/key/
/usr/share/pki/key/templates/
/usr/share/pki/key/templates/archiveKey.xml
/usr/share/pki/key/templates/generateKey.xml
/usr/share/pki/key/templates/retrieveKey.xml
/usr/share/pki/scripts/
/usr/share/pki/scripts/config
/usr/share/pki/upgrade/
/usr/share/pki/upgrade/10.0.1/
/usr/share/pki/upgrade/10.0.1/01-AddJniJarDir
/usr/share/pki/upgrade/10.0.3/01-RemoveJniJarDir