This commit fixes missing descriptions and default values when
applicable for `management.server.ssl`, `server.compression`,
`server.http2`, `server.servlet.jsp`, `server.servlet.session` and
`server.ssl`.

Those nested namespace are managed by a POJO that is declared outside
of the module of the target @ConfigurationProperties type using it. As
a result, the annotation processor has no access to the source model and
can't extract the description and the default value, if any.

This commit migrates the misleading field-level Javadoc to manual meta
data for the time being.

Closes gh-14669

* pr/14681:
  Clarify Javadoc of ConditionalOn annotations

Closes gh-14681

Closes gh-14589

* pr/14670:
  Polish docs

This commit replaces tabs to spaces in a yaml example for configuring
endpoint web exposure include.

Closes gh-14670

Closes gh-14645

Closes gh-14668

Update `ReactiveWebServerApplicationContext` so that the `HttpHandler`
bean is not longer created from `onRefresh`, but is instead created
only when the server starts.

Prior to this commit, the WebFlux hander would cause early
initialization of several beans, including Jackson Modules.

Closes gh-14666

Include an additional test to ensure that `.equals` works for names
starting with the same value.

See gh-14665

See gh-14660

Restore checkstyle import control and fix a few violations in the
process.

Closes gh-14660

Update checkstyle rules to fix import regex patterns for both packages
and classes.

* pr/14514:
  Add reference to valiktor-spring-boot-starter

Closes gh-14514

* pr/14621:
  Polish

See gh-14621

* gh-13714:
  Polish "Clarify that RestTemplateBuilder overwrites default converters"
  Clarify that RestTemplateBuilder overwrites default converters

Closes gh-13714

See gh-13714

Closes gh-14550

Closes gh-14612

Closes gh-14636

* gh-14630:
  Upgrade Java 10 CI image to 10.0.2-13-jdk

Closes gh-14630

* gh-14593:
  Move away from deprecated Gradle configurations

Closes gh-14593

* gh-14618:
  Upgrade Java 8 CI image to openjdk:8u181-jdk

Closes gh-14618

* pr/14592:
  Polish contribution
  Polish

Closes gh-14592

The SpringBootContextLoader still checked if tests were annotated with
@IntegrationTest or @WebIntegrationTest. Those classes have been
removed in Spring Boot 1.5 and been deprecated since 1.4.

This commit removes the check on the annotations as well as the static
list of names.

See gh-14592