SPI interface to ping microservice instance status in Instance Protection Mode, which means
protection of instance removal and usually used in scenarios where instances are fixed and changed rarely.
register swaggers in the location to current microservice
Scenes for contract first mode:
1.consumer
manager manage some product, can only know product microservice names after deploy
and can only register swagger after product registered
in fact, consumers can load swagger from ServiceCenter
so for consumer, this logic is not necessary, just keep it for compatible
2.producer
deploy to different microservice name in different product
can register swaggers in BootListener.onBeforeProducerProvider