Restrictive permissions to PLD /etc/certs break gajim when symlinked to
/etc/ssl/certs:
> 2019-01-13 13:27:08 (E) nbxmpp.tls_nb PlugIn: while trying _startSSL():
> Traceback (most recent call last):
> File "/usr/share/python3.7/site-packages/nbxmpp/tls_nb.py", line 288, in plugin
> res = self._startSSL()
> File "/usr/share/python3.7/site-packages/nbxmpp/tls_nb.py", line 327, in _startSSL
> result = self._startSSL_pyOpenSSL()
> File "/usr/share/python3.7/site-packages/nbxmpp/tls_nb.py", line 451, in _startSSL_pyOpenSSL
> for f in os.listdir('/etc/ssl/certs'):
> PermissionError: [Errno 13] Permission denied: '/etc/ssl/certs'