/usr/lib/jvm/java-8-openjdk-amd64/man/man1/policytool.1.gz is in openjdk-8-jre 8u181-b13-2~deb9u1.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/lib/jvm/java-8-openjdk-amd64/man/man1/../../jre/man/man1/policytool.1.gz