If the NSS binary files ever need re-generating, it's just a copy from a
fresh Firefox user profile, after importing
'example-xmlsecurity-Alice.cert.p12', as produced by
'./create-certs.sh'.

Change-Id: Iabe15a816cb674d1691e3ff3e10aa2bd851f8e0d
Reviewed-on: https://gerrit.libreoffice.org/30126Reviewed-by: Miklos Vajna <vmiklos@collabora.co.uk>
Tested-by: Jenkins <ci@libreoffice.org>