build(kubernetes): bump version to 0.6.2 (#100)

Author: peakji

deployments/kubernetes-mongodb-basic/ratus.yaml

@@ -29,7 +29,7 @@ spec:
         app: ratus
     spec:
       containers:
-        - image: hyperonym/ratus:0.6.1
+        - image: hyperonym/ratus:0.6.2
           name: ratus
           env:
             - name: ENGINE