fix: change default APP_DIR

BREAKING CHANGE: defaults to root dir as APP_DIR.

define APP_DIR in your values if you have different folder

meteor-kubernetes.yml

 include: 
   - project: gitlab-ci/kubernetes-base
-    ref: v1.1.0
+    ref: v2.0.0
     file: panter-kubernetes-base.yml
 
 image: panterch/docker-ci-meteor:latest