[changelog] updated s2i-openresty
[changelog] updated s2i-openresty

* new rover integration https://github.com/3scale/s2i-openresty/pull/38
* builder and runtime images have the same path `/opt/app-root/src`
* apicast can start without a prefix, using default openresty prefix

3scale/apicast,3scale/apicast,3scale/docker-gateway,3scale/docker-gateway,3scale/apicast,3scale/apicast