CKS: fix /opt/bin/deploy-cloudstack-secret in CKS control nodes (#8697)

Author: weizhouapache

plugins/integrations/kubernetes-service/src/main/resources/script/deploy-cloudstack-secret

@@ -21,14 +21,14 @@ function usage() {
 Usage: ./deploy-cloudstack-secret [OPTIONS]...
 To deploy the keys needed for the cloudstack kubernetes provider.
 Arguments:
-  -u, --url string         ID of the cluster
+  -u, --url string         URL of the CloudStack API
   -k, --key string         API Key
   -s, --secret string      Secret Key
   -p, --project string     Project ID
 Other arguments:
   -h, --help              Display this help message and exit
 Examples:
-  ./deploy-cloudstack-secret -u http://localhost:8080 -k abcd -s efgh
+  ./deploy-cloudstack-secret -u http://10.10.10.10:8080/client/api -k abcd -s efgh
 USAGE
     exit 0
 }