Spring integration using Jetty opens a port event when `server.port: -1`

[minwoox]

Spring integration using JettyService opens a port even when server.port: -1 is specified.
It's because JettyServletWebServerFactory sets the port with 0 when -1 is specfied.
https://github.com/spring-projects/spring-boot/blob/3e4a9f5204ee2fe989583b17b77d8dab8558282a/spring-boot-project/spring-boot/src/main/java/org/springframework/boot/web/embedded/jetty/JettyServletWebServerFactory.java#L164-L166
We should override the getWebServer and fix it for consistent behavior with the Spring Tomcat integration.

[Dogacel]

Hi @minwoox , I have recently started doing some Jetty work. I feel like this is still a broken behavior, I see that Armeria tries to listen 8080 even though it is configured to -1. I am not entirely sure if it is related to this or some other missing configuration. If this issue still persists, can you assign this to me?

[minwoox]

Hey, @Dogacel, I believe this issue hasn't been fixed yet. Sorry for leaving it unattended for so long.
Yeah, it's all yours. Thanks in advance. 🙇