allow overwrite deployment env vars by values

chart/templates/deployment.yaml

@@ -37,12 +37,12 @@ spec:
           args:
             - /opt/harvester/run-harvester.sh
           env:
+            - name: REDIS_HOST
+              value: {{ .Release.Name }}-redis-master
             {{- range $key, $value := .Values.global.env }}
             - name: {{ $key }}
               value: {{ $value | quote }}
             {{- end }}
-            - name: REDIS_HOST
-              value: {{ .Release.Name }}-redis-master
           volumeMounts:
             - mountPath: /config.yaml
               name: harvester-config