fix env var in UI chart (#967)

* fix env var in UI chart

* re-include 1.4.0 in helm chart index

* fix import in UI main.py and updated images

ui/manifests/deployment.yaml

@@ -20,7 +20,7 @@ spec:
       serviceAccountName: postgres-operator-ui
       containers:
         - name: "service"
-          image: registry.opensource.zalan.do/acid/postgres-operator-ui:v1.5.0
+          image: registry.opensource.zalan.do/acid/postgres-operator-ui:v1.5.0-dirty
           ports:
             - containerPort: 8081
               protocol: "TCP"

ui/operator_ui/main.py

@@ -7,6 +7,7 @@ gevent.monkey.patch_all()
 
 import requests
 import tokens
+import sys
 
 from backoff import expo, on_exception
 from click import ParamType, command, echo, option