postgres.sql: Add SUSE support

Signed-off-by: Tim Serong <tserong@suse.com>
calamari.conf: Use /srv/www/calamari/secret.key on SUSE

Signed-off-by: Tim Serong <tserong@suse.com>
Use /opt/calamari/conf/calamari.wsgi on SUSE

This is temporary until we can get rid of /opt/calamari.

Signed-off-by: Tim Serong <tserong@suse.com>