/usr/share/gocode/src/github.com/miekg/pkcs11/softhsm.conf is in golang-github-miekg-pkcs11-dev 0.0~git20160602.0.8f7ddbc-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1
0:hsm.db