chore: update subPath in CubeJS deployment configuration and add GITSYNC_LINK environment variable

Author: tuantran0910

deployments/cloud/k8s/applications/cubejs/cube/values.yaml

@@ -39,7 +39,7 @@ config:
     - name: git-data
       readOnly: true
       mountPath: /cube/conf/model
-      subPath: rainbow/src/cube/model
+      subPath: current/src/cube/model
   initContainers:
     - image: registry.k8s.io/git-sync/git-sync:v4.3.0
       name: git-sync
@@ -83,6 +83,8 @@ config:
           value: '5'
         - name: GITSYNC_VERBOSE
           value: '1'
+        - name: GITSYNC_LINK
+          value: current
 
 datasources:
   default: