This commits improves the cache auto-configuration for Redis by looking
up a custom "RedisCacheConfiguration" bean that allows to take full
control over the `RedisCacheManager`.

Closes gh-11599

See gh-11428

Closes gh-11428

This commit adds SSL client Authentication support
to Reactor Netty and adds the relevant tests to
`AbstractReactiveWebServerFactoryTests` for all servers.

Fixes gh-11488

This commit applies `server.undertow.*` configuration properties
to Undertow when configured as a reactive web server.

See gh-11500

This commit applies `server.jetty.*` configuration properties
to Jetty when configured as a reactive web server.

It also removes some infrastructure support for Jetty 8, which
is not supported anymore in Spring Boot 2.0 (partial fix for
gh-11504).

See gh-11500

This commit applies most `server.tomcat.*` configuration
properties to Tomcat when set up as a reactive web server.

Some Servlet-specific properties are not applied:

* server.tomcat.additional-tld-skip-patterns
* server.tomcat.redirect-context-root
* server.tomcat.use-relative-redirects

Fixes gh-11334

Closes gh-11331

* pr/11591:
  Polish "Make GsonAutoConfiguration align with JacksonAutoConfiguration"
  Make GsonAutoConfiguration align with JacksonAutoConfiguration

Closes gh-11591

See gh-11591

Backport commit d439b737 to upgrade launch integration tests to
use docker-java 3.0.x.

Closes gh-11203

See gh-11023

Closes gh-11023

* pr/11587:
  Fix imports order for Checkstyle

Closes gh-11587

Closes gh-11022

Fixes gh-11273

Extract properties used by RestDocs to their own class.

See gh-10696

This commit makes sure that properties-based resource bundle location
with a dot is detected. It also harmonizes the description of the
configuration key as our support is not stricly matching the convention.

Closes gh-10092

* gh-10969:
  Polish "Add auto-configuration for using REST Docs with WebTestClient"
  Add auto-configuration for using REST Docs with WebTestClient

Closes gh-10696

See gh-10969

Closes gh-11579

It's a new module in 3.0 and we're using 2.53.x in 1.5.x.

See gh-11528

Closes gh-11578

Closes gh-11576

* pr/11534:
  Use instance equality for Class

Closes gh-11534