add a gitea function label to the server

gitea/sts.yaml

@@ -2,6 +2,7 @@ apiVersion: apps/v1
 kind: StatefulSet
 metadata:
   labels:
+    gitea: server
     app: gitea
   name: gitea
   namespace: gitea
@@ -10,6 +11,7 @@ spec:
   replicas: 1
   selector:
     matchLabels:
+      gitea: server
       app: gitea
   serviceName: gitea
   updateStrategy:
@@ -17,6 +19,7 @@ spec:
   template:
     metadata:
       labels:
+        gitea: server
         app: gitea
     spec:
       containers: