tests: create a self-signed cert

src/test/setupTest

@@ -13,6 +13,9 @@ mkdir -p $HOME/.cloudron_test
 cd $HOME/.cloudron_test
 mkdir -p data/appdata data/box/appicons data/mail data/nginx/cert data/nginx/applications data/collectd/collectd.conf.d data/addons configs data/box/certs data/box/mail/dkim/localhost data/box/mail/dkim/foobar.com
 
+# put cert
+openssl req -x509 -newkey rsa:2048 -keyout data/nginx/cert/host.key -out data/nginx/cert/host.cert -days 3650 -subj '/CN=localhost' -nodes
+
 webadmin_scopes="root,profile,users,apps,settings"
 webadmin_origin="https://${ADMIN_LOCATION}-localhost"
 mysql --user=root --password="" \