feat: Support Case-Insensitive Matching for providerType

Author: SongZhen0704

server/controller/cloud/kubernetes_gather/plugin/plugin.go

@@ -83,7 +83,9 @@ func GeneratePodGroup(orgID int, db *gorm.DB, metaData *simplejson.Json) (string
 }
 
 func customSCIPodGroup(orgID int, metaData *simplejson.Json) (string, string) {
-	providerType := metaData.Get("labels").Get("virtual-kubelet.io/provider-cluster-type").MustString()
+	providerType := strings.ToLower(
+		metaData.Get("labels").Get("virtual-kubelet.io/provider-cluster-type").MustString(),
+	)
 	if providerType != "serverless" && providerType != "proprietary" {
 		log.Debugf("abstract type (%s) not support", providerType, logger.NewORGPrefix(orgID))
 		return "", ""