[ISSUE #119] Fix the brocker-server storage volume mount path error issue

diff --git a/rocketmq-k8s-helm/templates/broker/statefulset.yaml b/rocketmq-k8s-helm/templates/broker/statefulset.yaml
index ecf18a1..1dc6f7d 100644
--- a/rocketmq-k8s-helm/templates/broker/statefulset.yaml
+++ b/rocketmq-k8s-helm/templates/broker/statefulset.yaml
@@ -78,13 +78,15 @@
             - mountPath: /home/rocketmq/logs
               name: broker-storage
               subPath: home/rocketmq/rocketmq-broker
-            - mountPath: /root/store
+            - mountPath: /home/rocketmq/store
               name: broker-storage
               subPath: store/rocketmq-broker
       {{- with .Values.broker.nodeSelector }}
       nodeSelector:
         {{- toYaml . | nindent 8 }}
       {{- end }}
+      securityContext:
+        fsGroup: 3000
       volumes:
         - name: broker-config
           configMap:
@@ -101,4 +103,4 @@
         resources:
           requests:
             storage: {{ .Values.broker.persistence.size }}
-  {{- end }}
\ No newline at end of file
+  {{- end }}