[circleci] use rover s2i

Author: mikz

.circleci/config.yml

@@ -7,7 +7,7 @@ jobs:
     environment:
       S2I_VERSION: "1.1.7-226afa1"
       DOCKER_COMPOSE_VERSION: "1.16.1"
-      OPENRESTY_VERSION: "1.11.2.5-1"
+      OPENRESTY_VERSION: "rover"
     steps:
       - run: apk update && apk add wget make bash curl py-pip git openssh-client
       - run: |