fix(k8s): CE-471 avoid to remove value path of env when patch k8s deployment, as the value path does not exist if env variable has empty value.

app/kubernetes/helpers/application/index.js

@@ -115,7 +115,11 @@ class KubernetesApplicationHelper {
     const env = _.map(envVariables, (item) => {
       const res = new KubernetesApplicationEnvPayload();
       res.name = item.Name;
-      res.value = item.Value;
+      if (item.Value === undefined) {
+        delete res.value;
+      } else {
+        res.value = item.Value;
+      }
       return res;
     });
     return env;