Closes gh-14550

Closes gh-14612

Closes gh-14636

* pr/14637:
  Use Commons Logging for OnlyOnceLoggingDenyMeterFilter

Closes gh-14637

* gh-14631:
  Upgrade Java 11 CI image to 11-ea-28-jdk

Closes gh-14631

* 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/14597:
  Polish

Closes gh-14597

* 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

Closes gh-14476

While MongoDB 3.6.7 has been released, 3.6.5 is the latest version that's supported
by the version of Embedded Mongo that we're currently using.

Closes gh-14476

* pr/14600:
  Fix "Query Parameters" section name

Closes gh-14600

Downgrade the `spring-boot-maven-plugin` maven version to 3.3.

Closes gh-14464