chore: restore independent prod gitops config

ircs-prod/core/manifests/elasticsearch.yaml

@@ -1,4 +1,4 @@
-apiVersion: v1
+apiVersion: v1
 kind: Service
 metadata:
   name: elasticsearch-svc
@@ -40,7 +40,6 @@ spec:
     type: RollingUpdate
     rollingUpdate:
       partition: 0
-      maxUnavailable: 1
   selector:
     matchLabels:
       app: elasticsearch
@@ -54,7 +53,9 @@ spec:
       dnsPolicy: ClusterFirst
       restartPolicy: Always
       schedulerName: default-scheduler
-      securityContext: {}
+      securityContext:
+        fsGroup: 1000
+        fsGroupChangePolicy: OnRootMismatch
       terminationGracePeriodSeconds: 30
       initContainers:
         - name: install-plugins
@@ -173,4 +174,3 @@ spec:
         resources:
           requests:
             storage: 5Gi
-