[Fix-7902] The default registration plug-in is missing parameters (#7903)

* add exist check when add task to standby list

Co-authored-by: caishunfeng <534328519@qq.com>
Co-authored-by: wind <caishunfeng@users.noreply.github.com>
Co-authored-by: caishunfeng <534328519@qq.com>
Co-authored-by: BaoLiang <29528966+lenboo@users.noreply.github.com>

dolphinscheduler-service/src/main/resources/registry.properties

@@ -17,3 +17,11 @@
 
 registry.plugin.name=zookeeper
 registry.servers=127.0.0.1:2181
+registry.namespace=dolphinscheduler
+registry.base.sleep.time.ms=60
+registry.max.sleep.ms=300
+registry.max.retries=5
+registry.session.timeout.ms=30000
+registry.connection.timeout.ms=7500
+registry.block.until.connected.wait=600
+registry.digest=