Importing SSL certificates into Mono store

Run cert-sync --user /etc/ssl/cert.pem. Omit --user to synchronize for entire system (note that this installs them in /usr/share/.mono rather than /usr/local/share/.mono).

Without this you might be experiencing errors like "Ssl error:1000007d:SSL routines:OPENSSL_internal:CERTIFICATE_VERIFY_FAILED" or similar