fix: redis backup failed when using hostnetwork mode (#2473)

(cherry picked from commit f118228)

Author: wangyelei

addons/redis/templates/backupactionset.yaml

@@ -10,8 +10,6 @@ spec:
   env:
     - name: DATA_DIR
       value: {{ .Values.dataMountPath }}
-    - name: DP_DB_PORT
-      value: "6379"
   backup:
     preBackup: []
     postBackup: []
@@ -58,8 +56,6 @@ spec:
   env:
     - name: DATA_DIR
       value: {{ .Values.dataMountPath }}
-    - name: DP_DB_PORT
-      value: "6379"
     - name: MODE
       value: "cluster"
   backup:
@@ -116,8 +112,6 @@ spec:
   env:
     - name: DATA_DIR
       value: {{ .Values.dataMountPath }}
-    - name: DP_DB_PORT
-      value: "6379"
     - name: LOG_ARCHIVE_SECONDS
       value: "3"
     - name: IMAGE