Closes gh-10358

* pr/10239:
  Add mockito-inline dependency

Closes gh-10239

* pr/10309:
  Polish "Add KafkaAdmin Auto Configuration"
  Add KafkaAdmin Auto Configuration

Closes gh-10309

Spring for Apache Kafka has added a `KafkaAdmin` feature to automatically
add new topics to the broker.

See gh-10309

* gh-9643:
  Polish "Add auto-configuration for REST Docs with REST Assured"
  Add auto-configuration for REST Docs with REST Assured

Closes gh-9643

See gh-9643

* gh-9552:
  Improve Spring Session MongoDB support naming

Closes gh-10417

This commit uppgrade our Log4j dependency to 2.9.1. It also modifies
ModifiedClassPathRunner so that log4j-*.jar jars are always excluded
from the class path when using the runner. This is necessary due to
a change in Log4j [1] which makes assumptions about the class loader
hierarchy that do not hold true when using the modified class path
runner. Specifically, it assumes that the system class loader should
always be used to load providers. This is exactly what we don't want
to happen when using the modified class path runner as it breaks the
filtering of the class path and leads to Log4j classes being loaded
from both the system class loader and the filtering class loader.

Closes gh-10407

[1] https://github.com/apache/logging-log4j2/commit/9422ca7489d545b92dda9dd357c1b057d7a2f217

* pr/10382:
  Add reference to Citrus simulator Spring Boot starter

Closes gh-10382

* pr/10412:
  Polish JacksonAutoConfiguration

This commit removes unused constructor parameters introduced in 0c2ecb7b.

Closes gh-10412

Closes gh-10416

Cargo in currently incompatible with Java 9 so this commit disables
the deployment tests that use Cargo when building with Java 9.

Closes gh-10413

Remove duplicate dependency management that appeared in dc5254c3.

This commit fixes Javadoc generation when building with Java 9. It
upgrades the Javadoc plugin to a version that is Java 9 compatible
(3.0.0-M1) and reworks DevTools to remove usage of @PostConstruct.
The latter change is necessary as @PostConstruct is not visible by
default when building with Java 9 and, therefore its usage causes
Javadoc generation to fail.

Closes gh-10029

See gh-10395

* pr/10411:
  Typo in external config documentation

Closes gh-10411

Closes gh-10398

Closes gh-10410

Closes gh-10409

Closes gh-10408

Closes gh-10406

Closes gh-10405

Closes gh-10404

Closes gh-10403

Closes gh-10402

Closes gh-10401