Handle swagger with compression for reactive gateway

[nassimerrahoui]

Handle swagger with compression for reactive gateway when using prod profile and compression is true here

server:
  port: 8081
  shutdown: graceful # see https://docs.spring.io/spring-boot/docs/current/reference/html/spring-boot-features.html#boot-features-graceful-shutdown
  compression:
    enabled: true

Fix #14198

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[nassimerrahoui]

Bounty claimed : https://opencollective.com/generator-jhipster/expenses/35531

[pascalgrimaud]

@nassimerrahoui : approved